The main difference between heat and temperature is that temperature is solely dependent on the ? a. velocity of molecules within a body b. mass of a body c. composition of a body d. state of matter

Hey there,

Your question states: The main difference between heat and temperature is that temperature is solely dependent on the ?

Your correct answer would be Velocity of molecules within a body.
This would be main difference between heat and temperature is that temperature is solely dependent on the 

Hope this helps.
~Jurgen

In any atom of any element, you will find protons and neutrons in the nucleus of any atom