The correct option is B: the uncontrollable power of nature.
We can perceive how the author is trying to show us how human beings have the tools and the technology and, besides, the intelligence to capture wild animals, but what they do not seem to understand is that in many occasions they underestimate the power of nature. In this case, they are not aware of the power of the whale.
For the author the symbolism is clear: what is meant to be free, it should stay that way.
I believe it would be Evaluation, since we are evaluating the differences of two diets and their benefits.
You don't know about me, without you have read a book by the name of The Adventures of Tom Sawyer, but that ain't no matter.
The detail that helps you illustrate the idea? is that the only question? I can answer that is there anything else you need me to answer in the paragraph?