If the government uses tax money to pay for long-term investments such as roads or other infrastructure, what happens to the economy?
a investment decreases
b taxes increase
c investment increases
d taxes decrease

Is this a theory type of question?

If it is and if it took place under president Calvin Coolidge then taxes likely would have gone up.

If you are talking about now, then investment might go up but in order to pay for it, the government will just print more money, so that taxes shouldn't go up.

I'd pick C.

answer; ///the above statement is (false) .

the answer would be voluntary exchange -

"the act of buyers and sellers freely and willingly engaging in market transactions. moreover, transactions are made in such a way that both the buyer and the seller are better off after the exchange than before it occurred."

hope this : )

-shy