One of the truisms (banality) of the advertising industry is that it is rarely necessary to say something of substance in an advertisement in order to boost sales.

The ads are the soul of commerce. The contents are not as so relevant as the presentation of it or the exteriors. I.E formal > substance

Instead, one only needs to attract the potential customer's attention; memory does the rest, for it is more important for sales that people know of a product than that they know something about it


(A) People can remember a product without having much information about it.

Exactly what the highlighted parts tell you

(B) Advertisements, in their own way, function to improve people's memories.

Completely out of scope

(C) Attracting a potential customer's attention is a simple matter.

Who knows: could be. Not so much info about

(D) The advertising industry knows little of substance about the products it promotes.

We cannot say this.

(E) Advertisements seldom tell the truth about a product.

We do not know. Even if we stay on the surface selling a product that does not mean we are saying falsehood.


Regards