Read the following early draft of an essay and then choose the best answer to the question or the best completion of the statement.
Passage
(1) Calling someone a rat may be complimentary. (2) In one experiment, University of Chicago neuroscientist Peggy Mason placed 30 pairs of rats in pens. (3) One rat was caged in the middle of the pen, while the other was free to run around. (4) Eventually, 23 of 30 ratis liberated their peers by pushing the cage door open with their heads or leaning against the door until it tipped over
(5) In another experiment, Mason gave rats access to two cages: in one cage was another rat, in the other was a pile of chocolate chips. (6) The rats eating the chocolate themselves. (7) Instead, most of the rodents opened both cages and shared the sweets (8) "In rat land, that is big." Mason says, claiming that this study is the first to show altruistic behavior in rodents.
(9) Not all scientists agree with the conclusion Mason drew from the experiment, however. (10) The jailbreaking rats might have only been trying to silence their cohorts' distressing alarm calls. (11) Mason counters that the alarm calls from the caged rats were not frequent enough to motivate their peers, but both parties are speculating at this point.
(12) Mason's new study is one of many that are changing how scientists think about empathy and altruism, namely: that such characteristics are not limited to people, as they once thought. (13) It now seems that many animals have evolved instincts to help others.
In the context of the passage, what sentence should be inserted immediately after sentence 11 (reproduced below)? Mason counters that the alarm calls from the caged rats were not frequent enough to motivate their peers, but both parties are speculating at this point.
- A. No one will ever really know why rats do what they do
- B. Mason is probably biased anyway because it was her experiment.
- C. More research must be done to arrive at an answer.
- D. Some scientists will complain no matter what
Correct Answer & Rationale
Correct Answer: C
Inserting "More research must be done to arrive at an answer" after sentence 11 effectively emphasizes the ongoing debate and the need for further investigation into the behaviors of rats. This aligns with the speculative tone of the discussion. Option A, while true, does not contribute to the dialogue about the necessity of additional research. Option B introduces bias but distracts from the main focus on research requirements. Option D generalizes scientists' behavior without addressing the specific context of Mason's argument, making it less relevant to the passage's intent.
Inserting "More research must be done to arrive at an answer" after sentence 11 effectively emphasizes the ongoing debate and the need for further investigation into the behaviors of rats. This aligns with the speculative tone of the discussion. Option A, while true, does not contribute to the dialogue about the necessity of additional research. Option B introduces bias but distracts from the main focus on research requirements. Option D generalizes scientists' behavior without addressing the specific context of Mason's argument, making it less relevant to the passage's intent.
Other Related Questions
Which is the best way to combine sentences 6 and 7 (reproduced below)?
The poet expressed reluctance to proceed in this manner. It was not customary for him to write a commissioned poem for a certain occasion
- A. The poet expressed reluctance to proceed in this manner, and the reason for that was because it was not customary for hien to write a commissioned poem for a certain occasion.
- B. The post expressed reluctance to proceed in this manner because it was not customary for him to write a commissioned poem for a certain occasion.
- C. Because the poet,expressed reluctance to proceed in this manner, it was not customary for him to write a commissioned poem for a certain occasion
- D. The poet expressed reluctance, because it was not customary for him to write a commissioned poem for a
Correct Answer & Rationale
Correct Answer: A
Option A effectively combines the two sentences by clearly linking the poet's reluctance to the reason behind it, maintaining coherence and clarity. The phrase "the reason for that was because" emphasizes the connection between the two ideas. Option B, while concise, lacks the explicit connection that option A provides, making it less effective in conveying the relationship between the reluctance and the custom. Option C incorrectly begins with "Because," which disrupts the sentence structure and implies causation in a way that confuses the intended meaning. Option D introduces an unnecessary comma, which disrupts the flow and clarity of the sentence, making it less effective than option A.
Option A effectively combines the two sentences by clearly linking the poet's reluctance to the reason behind it, maintaining coherence and clarity. The phrase "the reason for that was because" emphasizes the connection between the two ideas. Option B, while concise, lacks the explicit connection that option A provides, making it less effective in conveying the relationship between the reluctance and the custom. Option C incorrectly begins with "Because," which disrupts the sentence structure and implies causation in a way that confuses the intended meaning. Option D introduces an unnecessary comma, which disrupts the flow and clarity of the sentence, making it less effective than option A.
Which is the best version of the underlined portion of sentence 12 (reproduced below)?
I've enjoyed the diversity here, and wanting to learn as much as I can about the different sorts of people who live here.
- A. (as it is now)
- B. here and had been wanting
- C. here and I also wanted
- D. here, and I want
Correct Answer & Rationale
Correct Answer: C
Option C improves clarity and grammatical structure by maintaining parallelism in the sentence. The phrase "I also wanted" aligns with "I've enjoyed," creating a balanced structure that clearly expresses both enjoyment and desire. Option A retains the original phrasing, which is awkward and lacks parallelism. Option B introduces a tense inconsistency with "had been wanting," which disrupts the flow and clarity of the sentence. Option D, while clearer than A, uses "I want," which shifts the meaning to the present instead of reflecting a past desire, making it less appropriate in context.
Option C improves clarity and grammatical structure by maintaining parallelism in the sentence. The phrase "I also wanted" aligns with "I've enjoyed," creating a balanced structure that clearly expresses both enjoyment and desire. Option A retains the original phrasing, which is awkward and lacks parallelism. Option B introduces a tense inconsistency with "had been wanting," which disrupts the flow and clarity of the sentence. Option D, while clearer than A, uses "I want," which shifts the meaning to the present instead of reflecting a past desire, making it less appropriate in context.
Which is the best way to revise and combine sentences 2 and 3 (reproduced below)?
I'm a country kid from rural Texas. I grew up on a ranch on the prairie.
- A. I'm a country kid from rural Texas and that's where I grew up on a ranch on the prairie.
- B. I'm a country kid from rural Texas who grew up on a ranch on the prairie
- C. I'm a country kid from rural Texas, where I lived and grew up on a ranah on the praine
- D. I'm a country kid from rural Texas, and I used to live on a ranch on the prairie where I grew up.
Correct Answer & Rationale
Correct Answer: C
Option B effectively combines the sentences by using a relative clause, making it concise and clear. It maintains the original meaning while improving flow. Option A is less effective due to the awkward phrasing "and that’s where," which disrupts the sentence's rhythm and clarity. Option C introduces unnecessary complexity with "where I lived and grew up," making it wordy and repetitive. Option D, while grammatically correct, adds unnecessary phrases like "used to live," which complicate the sentence without enhancing its clarity or brevity. Overall, option B provides the best revision by succinctly merging the ideas.
Option B effectively combines the sentences by using a relative clause, making it concise and clear. It maintains the original meaning while improving flow. Option A is less effective due to the awkward phrasing "and that’s where," which disrupts the sentence's rhythm and clarity. Option C introduces unnecessary complexity with "where I lived and grew up," making it wordy and repetitive. Option D, while grammatically correct, adds unnecessary phrases like "used to live," which complicate the sentence without enhancing its clarity or brevity. Overall, option B provides the best revision by succinctly merging the ideas.
Which version of the underlined portion in sentence 14 (reproduced below) most effectively elaborates on the idea presented at the beginning of the sentence?
In spite of his concern over time constraints the occasion was an important one!- he resolved to compose a relevant tribute.
- A. (as it is now)
- B. the event would be held in the nation's capital!-
- C. only two days until the ceremony!-
- D. the president would hear him recite!-
Correct Answer & Rationale
Correct Answer: A
Option A maintains the original structure and intent of the sentence, emphasizing the importance of the occasion while acknowledging the speaker's time concerns. This balance effectively elaborates on the initial idea. Option B introduces a geographical detail that, while relevant, does not directly enhance the emotional weight of the tribute. Option C focuses on the urgency of time but lacks the broader context of the occasion's significance. Option D, while adding a dramatic element, shifts the focus to the audience rather than the tribute itself, detracting from the main idea presented at the beginning.
Option A maintains the original structure and intent of the sentence, emphasizing the importance of the occasion while acknowledging the speaker's time concerns. This balance effectively elaborates on the initial idea. Option B introduces a geographical detail that, while relevant, does not directly enhance the emotional weight of the tribute. Option C focuses on the urgency of time but lacks the broader context of the occasion's significance. Option D, while adding a dramatic element, shifts the focus to the audience rather than the tribute itself, detracting from the main idea presented at the beginning.