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 5 (reproduced below)?
Compounding the problem is that food distribution system's currently require a lot of energy.
- A. (as it is now)
- B. systems
- C. systems's
- D. systems
Correct Answer & Rationale
Correct Answer: C
The best version clarifies the possessive form needed in the sentence. "Systems" (option D) is incorrect because it lacks the possessive, which is essential to indicate ownership of the energy requirement. Option B, "systems," does not convey possession either. Option A, "as it is now," does not address the grammatical structure needed in this context. The correct choice, "systems's," correctly indicates that the energy requirement belongs to the food distribution system, ensuring clarity and grammatical accuracy in the sentence.
The best version clarifies the possessive form needed in the sentence. "Systems" (option D) is incorrect because it lacks the possessive, which is essential to indicate ownership of the energy requirement. Option B, "systems," does not convey possession either. Option A, "as it is now," does not address the grammatical structure needed in this context. The correct choice, "systems's," correctly indicates that the energy requirement belongs to the food distribution system, ensuring clarity and grammatical accuracy in the sentence.
In context, where would the following sentence best be placed?
Any given instance of this practice may seem trivial, but the amount of waste quickly adds up.
- A. Before sentence 2
- B. Before sentence 4
- C. Before sentence 7
- D. Before sentence 13
Correct Answer & Rationale
Correct Answer: B
Placing the sentence before sentence 4 effectively emphasizes the significance of the practice being discussed, highlighting how seemingly minor actions contribute to larger waste issues. This context sets up a contrast between the triviality of individual instances and their cumulative impact. Option A, before sentence 2, lacks the necessary context to connect the triviality of the practice to its consequences. Option C, before sentence 7, is too far along in the discussion, diminishing the impact of the statement. Option D, before sentence 13, would disrupt the flow of ideas, as it is too late in the narrative to introduce the concept of cumulative waste effectively.
Placing the sentence before sentence 4 effectively emphasizes the significance of the practice being discussed, highlighting how seemingly minor actions contribute to larger waste issues. This context sets up a contrast between the triviality of individual instances and their cumulative impact. Option A, before sentence 2, lacks the necessary context to connect the triviality of the practice to its consequences. Option C, before sentence 7, is too far along in the discussion, diminishing the impact of the statement. Option D, before sentence 13, would disrupt the flow of ideas, as it is too late in the narrative to introduce the concept of cumulative waste effectively.
Which is the best version of the underlined portion of sentence 4 (reproduced below)?
He knew that he was the first poet to participate in these prestigious ceremonies therefore, he contemplated which poem would be appropriate for the occasion
- A. (as it is now)
- B. ceremonies, therefore,
- C. ceremonies, therefore
- D. ceremonies, therefore
Correct Answer & Rationale
Correct Answer: B
In this context, option B is the best choice because it correctly uses a comma before "therefore," which is necessary to separate the two independent clauses. This punctuation helps clarify the relationship between the ideas presented. Option A lacks the necessary punctuation, making the sentence run-on and harder to read. Option C omits the comma after "therefore," which is incorrect as it still connects two independent clauses. Option D is identical to C and also fails to include the necessary comma, leading to confusion in the sentence structure. Proper punctuation enhances clarity and comprehension.
In this context, option B is the best choice because it correctly uses a comma before "therefore," which is necessary to separate the two independent clauses. This punctuation helps clarify the relationship between the ideas presented. Option A lacks the necessary punctuation, making the sentence run-on and harder to read. Option C omits the comma after "therefore," which is incorrect as it still connects two independent clauses. Option D is identical to C and also fails to include the necessary comma, leading to confusion in the sentence structure. Proper punctuation enhances clarity and comprehension.