Answer:
Soy perezosa is correct
Explanation:
Soy is a conjugation of the verb ser, which means to be. Soy means I am, so soy perezosa is correct, meaning "I am lazy." eres means you are and es means they are. Both eres and es are not necessary as you would be saying "I am you are lazy" and "I am they are lazy."
Comment if you are still confused, I am happy to help :)
