The WPB or War Production Board set the products that would be needed for war and they determined their pricing.
So I agree with you, the answer is A.
But I must admit I was a bit iffy between A and D but I'd still say that A is a better choice.
Hope this helped
<span>Before 1860, the change that most influenced the lives of native americans on the great plains was the introduction of the horse. Reintroduction of the horses revolutionized entire cultures. It brought a lot of new possibilities of growth, so lots of tribes abandoned a relatively sedentary lifestyle in order to to become horse nomads. Also, the importance of haunting greatly increased for most tribes because ranges were expanded. As a result, a person’s wealth was measured in horses, those who could capture them from an enemy could be in respect with tribes.</span>
Answer:
supreme power or authority.
Explanation:
It is the power over oneself.
The answer is the second choice