Which web page serves a persuasive purpose? the home page of the government agency that regulates cellular phone use a university professor’s study of cellular phone trends a business’s web page announcing its new cellular phone an on-line encyclopedia’s entry for cellular phone

The right answer is "a business’s Web page announcing its new cellular phone "

In a very clear and simple way, persuasion is the ability to convince someone - whether to take action that you want, to think in a certain way, etc.  In the case of a company page announcing your new cell phone, persuasion can be understood as your ability to get the person to buy.

The company page will then persuade showing that her product is better than the product of competition, because it has superior features and a better price.

the answer to the question is a