Which of the Following Statements Best Answers the Question of How

Which of the following statements best answers the question of how burdensome overall taxation is in the United States?

A) An excise tax is a sales tax on a particular good or service.
B) The largest source of revenue for the federal government is individual income taxes.
C) Countries that tax more heavily are expected to provide more public services.
D) By international standards, U.S. citizens are among the most lightly taxed people in the industrialized world.