Please help bc i dont understand this one

Your answer is C.

Explanation:

if the doctors would observe the phases of the moon during treatment, the dependent clause (The phases of the moon) B depends on who was observing. (the doctors)

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.

what is the novel plz take a picture