Two equal masses of two different kinds of matter * A. always have the same amount of thermal energy
B. never have the same amount of thermal energy
C. probably have the same amount of thermal energy
D. probably have different amount of thermal energy

Thermal energy comes from heat sources that provide energy from it's temp.

Explanation:

Produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. The energy that comes from the temperature of the heated substance is called thermal energy. 6 min, 47 sec Heat Energy.

(If this doesn't help let me know in the comments, I'll try to explain better :> )