Answer:
The baby is very sleepy.
Step-by-step explanation:
The adverb in the sentence is very.
An adverb is an expression that modifies something.
"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 )."
hope i helped!