Answer:
The correct answer is letter "B": viral marketing.
Explanation:
Word-of-mouth marketing or viral marketing is the type of advertising consumers make of a product or service based on their own experiences. They could represent a benefit or a risk for the company of the product in reference since the comments being spread about it are based on subjective ideas.
Comments of people with a certain degree of influencing others are likely to affect more a firm's sales negatively or positively.
