8. A car travels 23 km in 15 minutes. How fast is it going in kilometres per hour? In metres per second?

Explanation:

92 kilometers per hour and 26 meters per second

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.

an electric circuit