I think the answer is B. An argument.
It was Dr. Martin Luther King Jr.
The community already had deep seated resentments and petty squabbles going on between them. The girls were able to introduce fear, conjecture, and intimidation among the population. People like mr. Putnam, used the hysteria created by the girls to cheat people out of their land. Others settled petty grievances by charging others with witchcraft. Hehe
Magic is what Santiago originally believes will bring him what he thinks is most important: material wealth. Magic in the story is symbolic of good fortune that occurs through luck. It is symbolic of amazing things that are not credited to God.