Question

Which years marked the heated point of the Vietnam War, as well as worldwide protests against the conflict?

Answer 1

A. 1967/1968

The other answers weren't even during the time of the Vietnam Conflict, whereas Option A even coincides with protests close to Kent State in 1970.

Answer 2

Your answer is A.  B is too far back, C is more around the Korean war, D is close, but not the answer.