Answer:
Heat is most closely related to THERMAL ENERGY.
Step-by-step explanation:
As we know that heat is a dynamic nature of energy in which heat will flow from high temperature to low temperature.
As we know that thermal energy is the energy due to the kinetic energy of all molecules of the given system
This thermal energy is exchanged from one system to other system only due to the temperature gradient.
So here heat always flows from high temperature system to low temperature system.
So here correct answer would be
Heat is most closely related to THERMAL ENERGY.