Question

what is energy?
o the heat required to raise a compounds temperature
o the transfer of heat between two objects
o the frequency at which a compound vibrates
o the ability of a system to do work

Explanation:

Energy is defined as the ability of a system to do work. The heat required to raise a compound's temperature is related to specific - heat capacity, the transfer of heat between two objects is heat transfer, and the frequency at which a compound vibrates is related to molecular motion but not the general definition of energy.

Answer:

the ability of a system to do work