The correct answer is C. A paid form of marketing communication.
Explanation:
Advertising and publicity are two types of communication related to products or services provided by a company. In the case of advertising, this is intentionally created by a company to try to persuade consumers about buying a product or service, this also implies advertisements are paid because the company needs to pay money for the creation and diffusion of the ad.
On the other hand, publicity refers to the negative or positive information about a product or service provided by media without the intervention or control of the company; this implies, it does not have any cost for the company, but it is not possible to control the information as it is part of news or coverage by a journalist. This implies, one of the most important differences between advertising and publicity is that advertising is a paid form of marketing communication while publicity is not paid.