The actions of international terrorists have been motivated primarily by the desire to draw world attention to
(this is a Cold War question)
A. the abuses of authoratarian rule
B. the abuses of capitalist exploitation
C. demands for national self-determination
D. demands for increased global economic equality
In order to get a good answer to this, you would need to give us a bit more context. Most specifically, you would need to tell us which terrorists you are talking about. You say this is a Cold War question so presumably you are not talking about Al Qaeda. However, there were many kinds of terrorists in the Cold War with different sorts of agendas. This fact makes it so that B and C, at least, would be plausible answers.
For example, there was the Red Brigades terrorist organization in Italy. This was a communist group fighting to defeat capitalism. The Baader-Meinhof gang did the same sort of thing.
On the other hand, you had the Palestine Liberation Organization. This was a group dedicated to nationalist self-determination. They wanted a Palestinian country, specifically one where Israel now is. They were not working to overthrow capitalism, but to get themselves a country for their "nation."
From this, it is clear that either B or C could be right without further information.