All the parents gathered in the cafeteria to watch the performance, Mark's were there to watch him play trombone in the what?\nOptions:\n- orchestra\n- brass quartet\n- marching band\n- school band\n- school play
Stream of thoughts:
school band
Trombone is played in the school band.

All the parents have been gathered in school band to watch the performance.

.

Thus, the answer is school band