Something that is given up as the result of a choice is referred to as
a. a cost
b. scarcity
c. a shortage
d. a decision

It's D

Explanation:

because if you give something up it's a decision.

It is A. a cost

Explanation:

I took the test.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail

answer; night terrors;