Answer:
The correct answer would be C, Market Research.
Step-by-step explanation:
Before making a Marketing Plan, the concerned personnel must have the facts and figures and data about the market. This data which must consist of the consumers' preferences, needs and demands, must be gathered before developing the marketing plan. This data which shows the consumers preferences is basically gathered through the market research. This research will be used to make a better marketing plan for the company to get benefit out of it in the future.