Final answer:
The italicized word 'lazily' is an adverb in the sentence 'The cat yawned lazily.'
Step-by-step explanation:
The italicized word 'lazily' is an adverb in the sentence 'The cat yawned lazily.' An adverb is a word that modifies a verb, adjective, or other adverb and typically answers how, when, where, or to what extent. In this sentence, 'lazily' describes how the cat yawned, modifying the verb 'yawned'.
Learn more about Adverbs