Answer:
The correct answer is A that is relationship selling
Step-by-step explanation:
Relationship selling is the term which is described as the technique of sales which focuses or involved on the interaction among the salesperson and the buyer instead of the details or the price of the product.
In this case, Tristan who is a salesperson, who is a charge of the textile company and takes the employees of the company out for dinner. He is involved in the relationship selling.