When the federal government borrows money from Americans, the greatest burden falls on A) the present generation
B) future generation

it is the present generation

Explanation:

because even though the federal government borrows money in a form of tax, it is use to develop the country. Some of the present generation aren't going to benefit from it whereas the future generation will benefit from how developed the country is.

the answer is:

c. economic output

answer; /// the above statement is (true);