Answer:
Merrily is the adverb.
Explanation:
An adverb is a word or an expression that modifies a verb, adjective, determiner, clause, preposition, or sentence. Adverbs typically express manner, place, time, frequency, degree, level of certainty, etc
Answer: C
Explanation: It would be the most responsible and polite thing to do, not just call out someone else or leave the customer expecting a call.
The answer is B. To inform