Answer:
d. Market research
Step-by-step explanation:
Market research -
It is one of the important step for the organisation ,
In this process , the information and data is collected , analysed and interpreted with respect to the customers reviews or feedback .
This step helps to enhance the production , sale and marketing of the goods and services the company produces , which in turn increases the profit earned by the company .
Hence , from the given information of the question ,
The correct option is d. Market research .