What do the following quotes from Cold War era US presidents have in common?Words of Cold Warriors Force is the only thing the Russians...

The only possible answer to this question is A.  The
comments by the three American presidents are similar because they are all fairly
aggressive and imply that the presidents will act strongly against their
enemies.

If you look at the other options, none of them
even make sense.  First of all, there is not a single mention of nuclear weapons or a
single mention of the UN or any other collective security group so you would have no
reason to pick C or D.  Detente is the lessening of tension
between the superpowers.  Do any of these quotes make it sound like the presidents would
like to decrease tensions?  No--they all sound like the presidents would like
more tension with the
communists.

So A is the only possible answer because none
of the three sound anything like what you say if you are looking to talk out your
differences with your enemies.