Answer:
Marketing is the most important part of a business. The main reason why marketing exists is to find the demand of the customer. A separate marketing department is present in each firm.
The market researchers analyse the market and formulate what kind of market they want to cater. Then they research on the most prevalent consumer behaviours that lead them to come with the demands or needs that they can create among the target population.
This helps them to produce and present their products in the ways that would be accepted in their their consumer base. Without all these, the producers would not be able establish the needs of the consumers.