Answer:
B) direct marketing with advertising.
Step-by-step explanation:
Infomercials are basically informative advertising. They are a type of long advertisement that not only promotes a product but also explains in more detail its benefits and uses.
Direct marketing refers to selling your product or service directly to your customers without using any type of intermediary (e.g. retail store). Internet sales provide a very useful and effective method for a company to engage in direct marketing because customers can purchase directly from them.