The study of economics is important because it enables us to
a. describe our standard of living.
b. increase our consumption of consumer goods.
c. become better decision makers.
d. determine what goods ought to be produced.

Become better decision makers.

Explanation:

The study of economics enables an individual to make better decisions. Economics teaches that resources available are scarce to meet all man's needs, therefore a scale of preference has to be drawn to determine the most pressing needs that must be met.

i would say iii (3) because in order to compare a price you have to use as a reference other near stores because it's its

hope i explained myself