Where must all revenue bills start?

House of Representatives

Explanation:

"The Constitution says that "all bills for raising revenue shall originate in the House of Representatives" and that "Congress shall have the power to lay and collect taxes." Presidents can, and frequently do, recommend changes to current tax laws, but only Congress can make the changes."

letter d is correct.

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44