Answer:
e. reinforcement
Explanation:
Reinforcement advertising is a type of product advertising that aims to reassure the customer he/she is doing the right thing by purchasing or consuming the product.
In this example, Campbell's soup is promised to be the right choice, given that your family has already used it, meaning it is tested and tried by people closest to you. This brings extreme relevance to the advertising message and reinforces your choice to buy this particular brand,
