Which option is an example of a simple sentence?

Which of the following is a comparison that this poem makes?

The great depression, which lasted throughout the 1930s in the united states, affected many people, and it had a devastating impact on an entire subset of the u.s. population. modernist writer john steinbeck wrote about the toll the depression took on these families, many of whom were forced to leave their farms and find other sources of income.

Assuming that the character maydelle is a symbol what does she most plausibly represent