How does the authors use of metaphor most clearly support the central idea?

D.

Explanation:

In these lines, the author compares feelings of grief to a wet mop. The author tells us that Shelley had been grieving for a long time. At first, this was considered normal. However, after a while, the grief and the sadness that grief brings with it become repellent and people begin to feel uncomfortable about it. The author supports this idea by exaggerating the effects of a wet mop and describing how it can repel others with a bad smell.