Answer:
Advertising agency.
Step-by-step explanation:
Advertising agency creates and controls all areas of advertisement, it constitutes of writers, artists that help to develop a good content for an advert.
The main purpose of an advertising agency is to create an advert that properly explains the different features of a product and also reasons why potential customers should patronize the brand. Advertising agencies helps business to increase sales and maximise profit.
It is therefore necessary for advertising agencies to carry out a deep research about a product so as to be able to create an advert that increases the demand for the product in the market.