The entire percussion section with the high school band. march; marches; play; or playing

The correct answer should be either marches or playing. That's because the marching band is considered to be It and it goes together with -es because it's third person singular. If you use playing then you build a subordinate clause that needs something else to fill it but it is correct either way.

Bigchungus: bangs on doorpapachungus: that held em al rightthats how chungus works

Ibelieve the answer is the first 1