Question

At this point [4], the writer is considering adding the following information:
Since the start of the Industrial Revolution, resulting in a rise in global temperatures.
Should the writer make this addition here at [4]?

• A. Yes, because it establishes the relationship between the level of carbon dioxide in the atmosphere and global warming.
• B. Yes, because it explains the key role sea otters, sea urchins, and kelp forests play in combating global warming.
• C. No, because it contradicts the claim made in the previous paragraph that sea otters help keep kelp forests healthy.
• D. No, because it mentions the Industrial Revolution, blurring the focus of the paragraph.

Answer 1

Answer: (A)

Yes, because it establishes the relationship between the level of carbon dioxide in the atmosphere and global warming.

A is the correct answer because the additional information usefully connects the carbon dioxide levels mentioned in this sentence with the global warming mentioned in the previous sentence. Options B, C, and D are incorrect because each misinterprets the relationship between the proposed information and the main points of the paragraph and passage.