Question 4.
In the last sentence of paragraph 3, “slightly warmer air” and “at a slightly colder temperature” refer to ______ AND ______ respectively:
Question Explanation
Option A: Consider the sentence: "As the cold Antarctic air cycles around their bodies, slightly warmer air comes into contact with the plumage and donates minute amounts of heat back to the penguins, then cycles away at a slightly colder temperature." It has been mentioned in the passage that the plumage temperature is lower than the surrounding air temperature. Hence, "slightly warmer air" refers to the Antarctica air that surrounds the plumage and "at a slightly colder temperature" refers to the fall in temperature due to heat loss.
Option B: The process of convections and not radiation is involved in this case. Hence the first part of the option is incorrect. B is not the answer.
Option C: The passage does not mention air trapped in plumage. Hence this option is rejected.
Option D: "slightly warmer air" refers to the Antarctica air and not the air inside the penguins' bodies. Hence D is incorrect.
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