The more outgoing a person is, the more they’d be willing to be apart of something where there is consistent interaction. If one is more likely to take the lead, they might want to be apart of student government or a sports team. If one is more in touch with their artistic abilities, they may lean towards art, fashion, or music clubs. Hope this helps!
Short Answer: A
A really super writer could get away with putting the thesis statement in the conclusion of a paragraph piece. But present day English Departments have become very rigid about where the thesis is.
It is always in the introduction. The idea is that you have to guide your reader to the arguments that follow in the paragraphs to come between the introduction and the conclusion.