Answer:
The correct word for the blank space is: marketing and customer service representatives.
Step-by-step explanation:
Personal selling is the act in which salesmen offer a good or service explaining its core benefits to a customer in person. Salesmen usually have a set of strategies to personalize the product according to the customer demands and needs something that will allow them to close the sale, meaning earning profits. As revenue is the objective of every firm, marketing and customer service representatives must learn the basics of personal selling.