Which choice best states the main purpose of the text?

|Question 7Verbal

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From the little penguin to the North Atlantic right whale, a wide range of semiaquatic species have been found to share a common approach for saving energy when traveling long distances. To minimize both wave drag at the surface and the vertical distance to reach the surface to breathe, these air-breathing marine animals swim at depths around three times their body diameter. This finding has important implications for animal conservation efforts. For example, considering typical swim depths could help reduce the risk of boat strikes, which are a major threat to whales.

To identify a shared trait across several species that makes the conservation of those species particularly challenging

To describe a general trend in the swim depths of certain species that explains why those species are more efficient swimmers than are other semiaquatic species

To summarize a theory that accounts for why most air-breathing marine animals swim at the same depth regardless of their size

To present a finding about the behavior of certain species that may help conservationists protect those species