Answer:
O'Brien approaches Winston and strikes up a conversation. For Winston, this moment is a significant one. Not only does Winston sense that O'Brien's "political orthodoxy was not perfect"
Explanation:
A. I think! Because that one makes more sense that all the others, the others really don’t make much sense at all.
D. Bitter. It wasn't humorous because they were enemies, it wasn't friendly because it ended in a murder, and it wasn't optimistic because in now way was it positive.
I think the answer is c but I could be wrong!!