Final answer:
Determining tax deductions is not a use for market research.
Step-by-step explanation:
The correct answer is:
c) Determining tax deductions
Market research is the process of gathering information about customers, competitors, and the market in order to make informed business decisions. It is used to identify customer needs and preferences, determine what products or services to offer, and forecast sales. However, determining tax deductions is not a use for market research. Tax deductions are related to accounting and financial management, not market research.