the study of the interaction between individuals and businesses is known as\nthe law of supply.\nmacroeconomi…

Brief Explanations:

Microeconomics focuses on the behavior of individual economic agents such as consumers (individuals) and firms (businesses), including their interactions in markets. The law of supply is about the relationship between price and quantity - supplied by producers. Macroeconomics looks at the economy as a whole. Elasticity measures the responsiveness of quantity - demanded or supplied to changes in price or other factors.

Answer:

C. microeconomics