In the 1950s, President Eisenhower warned
that the arms industry in the United States
had
a. adjusted slowly to the demands of
modern war.
b. become a permanent, vast militaryindustrial complex.
c. fallen behind the technological
advancements of the Soviet arms
industry.
d. focused too much on technological
development and not enough on
maintaining conventional arms

b. Become a permanent, vast military industrial complex.

Explanation:

President Eisenhower advised US citizens to be careful and vigilant with the industrial-military complex that had become too powerful and may care only about its interests. He pointed at possible abuses of power coming from a close association between the federal government and the defense industry. New systems of weapons , especially nuclear weapons, were becoming more expensive to develop, taking enourmous resources from the public budget.

the answer to your question is ( syngman rhee) have a great day

where is the subject? hahahaha