The basic competencies of selling that are required of top professional salespeople include selling skills and . accounting knowledgeb. product knowledgec. ethical social responsibilityd. interpersonal communication

The correct answer is (d)

Explanation:

Interpersonal communication skills are considered vital for marketing professionals, and companies usually arrange workshops and seminars to improve the interpersonal skills of their marketing employees. Apart from selling skills, interpersonal skills are vital to become a top professional salesman. The face to face communication is all about interpersonal skills which include verbal and non-verbal actions that help to attract more customers.

the u.s. census bureau produces data on the population and economy nationwide. it can you to analyze the kind of people living in your neighborhood. it does not show you the market of people willing to buy your product or an existing market for your product. that will require more market research. the census bureau only gives you an insight to the demographics in your area.