Verified Answer :

The right answer is los peces se divierten al nadar

Answer:

The correct answer is se divierten.

Explanation:

This is the case of a reflexive pronoun. This type of pronoun indicates an action that falls on the person who is carrying it out. In other words, it is done by the subject for himself: "The fish have fun."

Depending on the personal pronoun, a reflexive pronoun will correspond. Let's see :

Yo me divierto


Tú te diviertes


Él se divierte


Ella se divierte


Usted se divierte


Nosotros/as nos divertimos


Ellos / Ellas se divierten


Ustedes se divierten