Answer: me visto
Yo me visto a las ocho.
I dress at eight.
Step-by-step explanation:
Explanation: The subject in this sentence is "Yo", that is first-person in the singular, so the reflexive pronoun must be "me", that means "a mí" and the reflexive verb must be conjugated in first-person in the singular: Yo me visto (Yo visto a mí).