Sometimes people get caught in a "downward spiral," a case in which something leads to a result which in turn leads to more of the original thing, bringing on more of the result. as the process continues, the result continually gets worse and worse. an example is when people turn to binge eating when depressed, which causes them to put on weight and feel unhealthy, which then makes them more depressed, leading to more overeating, and so on. the author is mainly concerned with: . convincing people not to overeat. b. explaining the process of the "downward spiral." c. showing how overeating can lead to depression. d. showing how some processes lead to surprising results.

The correct answer is option: B which is explaining the process of the downward spiral

Explanation:

the reason this is the correct answer is because the example of overeating explains how one problem can create one and that can cause another and it goes on a spiral a something causes something and they all g together as one action can create a ripple effect.

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.