Answer:
A. It presents the subject of the paper
Explanation:
A thesis statement focuses your ideas into one or two sentences. It should present the topic of your paper and also make a comment about your position in relation to the topic. Your thesis statement should tell your reader what the paper is about and also help guide your writing and keep your argument focused.
I believe it's A, as it's asking for social context of the passage, meaning in what environment it was said at. (I may be wrong, please double check)
She makes it clear how much of a toll killing has taken in Neville