Question

Which of these sources has a potential for bias, but is likely to have a lot of data about many products?

O Unpaid personal testimony
O Review service
O Advertisement
O Salesperson

Answer 1

salesperson

Step-by-step explanation:

Salesperson is the one who finds potential buyers for the products and services.

Being a salesperson, he has a vast knowledge of the products or services he deals in but at the same time, as he wants to market his products and sell them, he can manipulate the buyers.