I think it is D.
It is the only sentence that correlates the second part of the sentence properly to Camus.
A - 'in' not appropriate
B - 'over' not appropritae
C - after there was dispute..vague -> dispute between whom?
D - resolves the problem in C and 'after' indicates proper sense
E - 'over' does not give proper sense.
Camus broke with Sartre in a bitter dispute over the nature of Stalinism.
(A) in a bitter dispute over
(B) over bitterly disputing
(C) after there was a bitter dispute over
(D) after having bitterly disputed about
(E) over a bitter dispute about
pls post ans with explanations
Thnx & Rgds,