What horizontal acceleration when it changes velocity to 32 m/s to 12 m/s and two seconds

-10 m/s^2

Explanation:

a = (12 - 32)/2 = -10 m/s^2

this is poiselle's equation from fluid mechanic in physics. mech eng

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.