Acar is driving toward a building at 15 mph. on the roof of the car, an insect is scurrying away from the building at 10 mph relative to the cars roof. to a person sitting in the building, what is the insects velocity

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.