Answer:
d. Adverb
Explanation:
Adverbs are words that are used to change, modify, or qualify many types of words included adjectives, verbs, and other adverbs. They answer some questions, in other words, to know which word is an adverb you should answer these questions in a sentence.
- How?: The boy ran slowly.
- When?: I'll do my homework tomorrow.
- Where?: He is not here.
- To what extend? It's terribly cold.
