Read the Following Sentence and Dictionary Entry for the Word

Multiple Choice

Read the following sentence and dictionary entry for the word Advertise from Webster's New Collegiate Dictionary and answer the following questions.
Michael decided advertising in the school paper would help to increase his overall sales. ad·ver·tise \ ad-ver-tahyz\ vb -tised; -tising -vt 1: to make something known to: Notify 2 a: to make publicly and generally known <advertising their readiness to make concessions> b: to announce publicly esp. by printed notice or a broadcast. c: to call public attention to esp. by emphasizing desirable qualities so as to arouse a desire to buy or patronize ~ vi: to issue or sponsor advertising
-What part of speech is advertise?

A) Noun
B) Verb
C) Adjective
D) Adverb