The EOP agency that directly relates to domestic affair is :
Office of Policy development
Office of Policy Development is responsible in advising and assisting president in the formulation, coordination, and implementation of domestic and economic policies.
In the 1800s the United States had to two types of industrial workers, these were:
Craft workers were workers who had a specific set of skills and training while Common laborers were workers that lacked any kind of specialized training.
The main difference between these two was that Craft workers earned more and had more control over their working hours because of their skillset than the common laborer.
The exact date is unknown but between 550 bc and 539 bc.
The statements referred by the question are:
a) It convinced the United States to dismantle its nuclear weapons.
b) It proved that a naval blockade was not an act of war.
c) It showed Cuba that communism should be stopped.
d) It brought the world dangerously close to nuclear war.
The correct statement is D. Historians agree the Missile Crisis was the closest the world got to have a nuclear war between the U.S. and USSR. Nothing before or after this came as close to be direct aggression from one of these countries against the other.
Statements A and C never happened: the U.S. has nuclear weapons until today, and Cuba didn't give up on communism.
Statement B doesn't fit the facts around the Missile Crisis. The naval blockade didn't lead to war only because the U.S. was defensive.