Scenario 18-2 a Young Man Decides to Become a Mass Producer of Producer

Scenario 18-2
A young man decides to become a mass producer of quality T-shirts.His small factory located in Oregon begins by promoting itself as hiring excellent seamstresses, offering a pleasant working environment, paying decent salaries, and, most importantly, giving the public an opportunity to buy clothing that is truly "made in America." The company eventually adds other clothing items, opens three brick-and-mortar retail stores in several large cities, and expands to online shopping.Over the years, the firm grows and prospers due to its reputation as an American manufacturer, a fair employer, and an opponent of the traditional view of "sweatshops." And along the way, it deals with a few public relations issues.
-(Scenario 18-2) Over the years, he has learned that positive word-of-mouth advertising helps.He now enlists the testimony of seamstresses who have been with him for years, customers who won't buy any casual clothing but his, and even high-end designers who praise his business integrity and product quality.What is he involved in now?

A) publicity marketing
B) influencer marketing
C) sponsorship marketing
D) internal marketing