Explanation
Correct answer: A.
Choice A is the best answer. Text 2 describes how the Svalbard polar bears have adapted to the loss of sea ice by diversifying their diet and feeding on reindeer and seabird eggs, resulting in a “stable and well nourished” population despite environmental challenges. This counters the underlined claim that polar bears facing a loss of sea ice are at “great risk of extinction” by the end of the century.
Why the other choices are wrong
Choice B
Choice B is incorrect. Text 2 does not challenge the fact that sea ice is rapidly declining in the Arctic due to warming ocean temperatures. In fact, it states that the Svalbard polar bears have faced “rapidly declining sea ice in recent years.”
Choice C
Choice C is incorrect. The claim in Text 1 is specific to polar bear populations affected by the loss of seal hunting habitats, so unaffected populations are irrelevant to the claim. Also, Text 2 doesn’t mention any polar bear populations that haven’t yet been affected by loss of seal hunting habitats. It focuses on a population that has been affected by sea-ice loss but has managed to survive and thrive nevertheless.
Choice D
Choice D is incorrect. Text 2 doesn’t imply that polar bears rely on a single seal-hunting strategy. In fact, the researcher in Text 2 would say that Text 1 fails to account for polar bears’ ability to develop other hunting strategies and food sources.