Amy mendoza is a local radio personality who goes by the name "amy in the a. m." on the air. she also uses that label in print ads to radio listeners distinguish her show from the other morning radio shows in her town. amy would be most likely to register her name as a:

I believe the answer is: service mark

Service mark refers to a legalized brand or name that is used by company to distinguish its product with the competitors.
Having service mark would improve brand recognition in the market that would often lead to more sales due to customers' repetitive use.