Answer:
1) part of speech
2) all of the above
3) the word's synonym
4 )promptly
Step-by-step explanation:
Adverb Definition: a word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word group, expressing a relation of place, time, circumstance, manner, cause, degree, etc. (e.g., gently, quite, then, there ).