In the absence of the option, but from memory, I believe the last option about the person falling to his death would be the one.because it seems to be the only that appears to be logical. If is is a logical analogy, then that would support this criticism of Dr. King which would not be a correct analysis of his and his followers actions.
The answer to the literature question you have presented above would be character, plot, and setting. The three basic elements of all novels are plot, character, and setting. Harriet Beecher Stowe wrote the very successful novel in 1852 using these basic elements.