Answer: D) Salespeople can build strong relationships with customers
Explanation:
In personal selling there is a two way communication with the customer and you can easily demonstrate your product in detail without any interruption.
Personal selling includes people with whom sales person has already established a relation. So that is why, there are more chances of received immediate feedback due to this personal relation.
Basically, it is interactive technique of selling the products and it helps to build trust and strong relationship with the customers.
Therefore, option (D) is one of the effective advantage of personal selling as compared to all the given options.