4. Our economy is primarily characterized by... a, unlimited wants and needs.
b. unlimited material resources.
C. no energy resources.
d. abundant productive labor.
e. no way to achieve satisfaction.

i believe its d because they had a lot of labor abundant and productive.

you dont have to give me brainliest because i really just guessed because i really think its the abundant productive labor too

the correct answer is c.

well, i can't read it so i'll ask you questions about it : )

if you were a reader and you read the introduction, would you want to read more?

does it start with a question? if so, is it something you would want to read about?

and ask any friends or family for their opinion : )