Answer:
C. Study the choices people make
Explanation:
Economics is the study of choices people make to satisfy unlimited wants from limited resources having alternative uses.
A, B, E are inapt because - Economics is not only about businesses but also about consumers & other economic agents, Capitalism & Socialism are two types of Economies, Wealth Accumulation is a primitive & narrow definition of Economics.
D. is inapt because - Wants are unlimited & resources limited (opposed to vice versa given).