Explain the theory of supply-side economy

The assumptions are that if you cut taxes and costs for companies, then the company owners and investors will be able to bring about the growth of economy and employ more pepople. The benefits were that the economy entered a peacetiime and people were generally living better. The bad side was that public debt increased by a lot and this would come back to haunt the people later after Reagan was long gone.

Boycotting basically

shoutout to: @Greenleafable

remain heartless

the answer might be either a or c. can't be too sure , because i searched the web, but no valid answers came through.

answer; i believe the correct answer is (crops);