Comprise about 20% of all businesses but account for about 81% of u. s. business receipts.

Corporations  comprise about 20% of all businesses but account for about 81% of u.s. business receipts.

Explanation:

A corporation is kind of a business that is set up by a legal organization headed by a person or several partners together. Examples including Microsoft, Apple Inc. etc

While corporations make up just 20% of registered businesses, they are usually quite larger and have national foot print. They can employ thousands of people, have a number of subsidiary companies and work with hundreds of smaller businesses.

Hence, while they are smaller in number, their impact on the economy is very large.

answer; foreign exchange transaction;

the answer is d i just took the test (provides the number of allowances an employee has claimed.)