As you can see, the conjugation for the personal pronoun <em>"nosotros"</em> in subjunctive form is <u><em>"escuchemos,"</em></u> for that reason the <u>first option</u> is the right.
aeróbicos? I wasn't too sure on what it was asking but from what I got you can choose what extracurricular activity in spanish. was not sure about it but I hope this helps.