The online advertising market has grown from its initial focus on simple text ads to a much larger set of options. There are five key categories of online advertising. They are: search, , classified, referral, and e-mail.

The online advertising market has grown from its initial focus on simple text ads to a much larger set of options. There are five key categories of online advertising. They are: search, , classified, referral, and e-mail.




A. show
B. track
C. monitor
D. explain
E. display



Answer: E


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