Dell Computers wants to reach all potential users of their products, both industrial buyers and final consumers. They would most likely use advertising because it has the greatest reach.

The correct answer is letter "B": national.

Explanation:

National advertising refers to a marketing strategy in which a company aims to offer a good or service in the same proportion all over a country. This advertising is massive and involves promoting the corporation's product through different mediums of communications such as television, radio, newspapers, or billboards. The campaign is directed to individual consumers and organizations.

the page presents four different kinds of threats that volcanoes pose and what to do before, during, and after an eruption.