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 rats 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 context, adjusting capitalization as needed, which of the following would most appropriately be inserted at the beginning of sentence 10 (reproduced below)?
The jailbreaking rats might have only been trying to silence their cohorts' distressing alarm calls
It is true that:
- A. It is true that
- B. They point out that
- C. They claim it is obvious that
- D. It appears that
Correct Answer & Rationale
Correct Answer: B
Option B, "They point out that," effectively introduces the sentence by indicating that a specific viewpoint or observation is being made about the jailbreaking rats' behavior. This phrasing suggests a direct reference to a previous argument or evidence, enhancing the clarity of the statement. Option A, "It is true that," is too vague and does not connect to any preceding discussion, making it less effective. Option C, "They claim it is obvious that," implies a level of certainty that may not be warranted, potentially misrepresenting the argument's intent. Option D, "It appears that," introduces ambiguity and weakens the assertiveness needed in this context, making it less suitable than option B.
Option B, "They point out that," effectively introduces the sentence by indicating that a specific viewpoint or observation is being made about the jailbreaking rats' behavior. This phrasing suggests a direct reference to a previous argument or evidence, enhancing the clarity of the statement. Option A, "It is true that," is too vague and does not connect to any preceding discussion, making it less effective. Option C, "They claim it is obvious that," implies a level of certainty that may not be warranted, potentially misrepresenting the argument's intent. Option D, "It appears that," introduces ambiguity and weakens the assertiveness needed in this context, making it less suitable than option B.
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.
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.
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.
Which is the best version of the underlined portion of sentence 6 (reproduced below)?
Early on for example my anxiety about getting lost was so bad that I was even scared to go for a walk or to take a bus or the subway.
- A. (as it is now)
- B. on for example,
- C. on, for example,
- D. on, for example
Correct Answer & Rationale
Correct Answer: C
Option C, "on, for example," is the best choice because it correctly uses a comma to set off the phrase "for example," which introduces an illustrative clarification of the preceding idea. This punctuation enhances clarity and improves the flow of the sentence. Option A, "as it is now," lacks necessary punctuation and fails to clarify the relationship between ideas, making the sentence awkward and confusing. Option B, "on for example," omits the comma, which disrupts the sentence's readability and does not properly highlight the example being introduced. Option D, while similar to C, incorrectly uses "on," which is unnecessary in this context and can lead to confusion.
Option C, "on, for example," is the best choice because it correctly uses a comma to set off the phrase "for example," which introduces an illustrative clarification of the preceding idea. This punctuation enhances clarity and improves the flow of the sentence. Option A, "as it is now," lacks necessary punctuation and fails to clarify the relationship between ideas, making the sentence awkward and confusing. Option B, "on for example," omits the comma, which disrupts the sentence's readability and does not properly highlight the example being introduced. Option D, while similar to C, incorrectly uses "on," which is unnecessary in this context and can lead to confusion.