Answer:
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.