Which of the Following Is NOT a Reason Why Economists

Which of the following is NOT a reason why economists are interested in understanding consumer behavior?

A) Economists are often called upon to evaluate public policies that impact the well-being of consumers.
B) It is important for businesses to be able to accurately predict consumers' choices.
C) Economists want to understand the conditions under which trade will take place.
D) Economists want to predict the value of a company's stock.