In "moby dic", as the ship is sinking, we see a crew member frantically nailing ahab's flag to the mast. this detail exemplifies the larger theme of: question 11 options: nature's essential evil. the supremacy of american culture. america's loss of innocence. the futility of human efforts to dominate nature.

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.