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...

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.