Question

choose the correct response:
¿vas a tocar
el piano hoy?
no, no vas a tocar el piano.
sí, voy a tocar la trumpeta.
sí, voy a tocar el piano.

Explanation:

The question is in Spanish, asking "Are you going to play the piano today?". The correct response must match the subject (first-person, since the question is directed at the listener, who responds with "I") and the activity (playing the piano). The first option uses the second-person "vas" which is incorrect for a self-response. The second option mentions playing the trumpet, which does not match the piano in the question. The third option correctly uses first-person "voy" and references playing the piano.

Answer:

Sí, voy a tocar el piano.