Answer:
Intransitive verb
Step-by-step explanation:
An intransitive verb is a verb that does not take a direct object, which means that there is no receiver of the action represented by the said verb (e.g. sleep, arrive, fly). The opposite are transitive verbs, which take one or more direct objects (e.g read (a book), kick (a ball))
Verbs are words used to describe actions, states, and occurrences. Slept is the past simple form of the verb to sleep. Because it's impossible for this verb to take an object, it's intransitive.
Adverbs are words used to modify verbs, adjectives, and other adverbs.
Personal pronouns are words we use instead of naming someone or something by their name. Personal pronouns are I, you, he, she, it, we, you, they, and their other forms.
A linking verb is a verb that describes the subject (what the sentence is about) by connecting it to the subject complements.