A child on a swing moves at 6.5 m/s at the very bottom of her motion. Assuming she doesn’t pump her legs or get a push, what is the maximum height she can reach? (Assume there’s no air resistance or friction.)

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.