"While capitalism and imperialism have been closely linked in the minds
of many, the truth is that the two systems are at odds with one another.
Where one system flourishes, the other cannot. Many negative things,
such as political corruption, the exploitation of the poor, and mass
famines, have been blamed on capitalism, but that blame is misplaced.
Real capitalism should work to improve circumstances for the poor by
voluntary exchange, but imperialism hurts the poor by political or
military domination that enables countries or government-backed
businesses to profit at others’ expense."-Learn liberty
Answer: a. The War Production Board helped factories quickly shift from only making consumer goods to making war materials.
Explanation:
A key part of the U.S. being able to join the Second World War and contribute so effectively in the time that it did, was the War Production Board's efficiency in shifting American consumer production to war materials for use by the U.S. military and the Allies.
Thanks to the Board, companies shifted their focus from consumer goods even though there was initially some massive pushback. Following a national campaign, opposition subsided and the U.S. was able to pump out so much war material that the war would not have been won without.
The answer for your question is D