(1) Glen’s horse, Tipper, grazes lazily in his grassy.In sentence (1), what part of speech is "lazily"?
(A)verb
(B)adverb
(C)adjective

In that sentence ... and most likely wherever it's used ... "lazily" is an adverb, modifying the verb "grazes".Here's a tip:  Whenever you see a word that ends in "...ly", it's usually an adverb.