69. No system is perfect in the world. Whenever there is a change in a system, energy istransferred and some of that energy is dissipated. Dissipation is a term that is often usedto describe ways in which energy is wasted. Any energy that is not transferred to usefulenergy is said to be wasted because it is lost to the surroundings. Electrical cableswarming up are a good example of this. It is not useful to have warm wires as energy isdissipated to the surrounding air. According to the above example, which of thefollowing type of energy is most likely to be the type of energy which is dissipated into?
(A) unclear energy
(B) electromagnetic energy
(C) thermal energy
(D) kinetic energy