I feel like it's not, because google says that metaphor is a figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable. It may be if something else was added to the sentence. But since there isn't anything else to it, it isn't because it does not match the description of a metaphor.
Answer:
B a conclusion reached from evidence and reasoning.
The author wants to show that he is a superstitious person
I think it’s B) piggy is not sure that Ralph is a good leader