premise: Advertising is used to sell a service.
hypothesis: Advertising is an audio or visual form of marketing communication that employs an openly sponsored , nonpersonal message to promote or sell a product , service or idea . Commercial ads often seek to generate increased consumption of their products or services through `` branding , '' which associates a product name or image with certain qualities in the minds of consumers . Non-commercial advertisers who spend money to advertise items other than a consumer product or service include political parties , interest groups , religious organizations and governmental agencies .