Which is an example of acceleration?
a. a girl walks two miles per hour north for three hours.

b. a boy walks two miles in one hour.

c. a girl drives a total distance of 240 miles in just under four hours.

d. a boy walks two meters north, turns west, and walks another two meters.

15.3 cos 65 degrees trig

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.