Answer:
Marketing manager ( B )
Step-by-step explanation:
Marketing manager's sole responsibility is create a marketing plan or strategy that will put the goods and services of the company in the for front so as to meetup or get potential customers buying into the company's product or service.
one of the ways a marketing manager will achieve this sole responsibility is by conducting analysis of the market and finding out the demand and supply of the company's product in the open market. this analysis will involve the researching of customers' purchasing habits and what platform to find and get potential customers for the company.