What is telemarketing?

Select one:

It is the process of promoting products through $30-$minute$-$long infomercials.

It is a form of marketing that uses the telephone to sell directly to businesses and consumers.

It is the process of marketing products and services using direct$-$response television advertising.

It is the process of selling products through affiliate networks and social media sites.

It is a marketing system where product information is provided through unmanned ordering machines.