A tie
a tie to someone you can hold on,
a tie can be broken
The most important rule of survival Brian learned in Chapter 8 was that "feeling sorry for yourself didn't work..It wasn't just that it was wrong to do, or that it was considered incorrect. It was more than that - it didn't work".
I think the answer would be B
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.