(03.02 mc)which of the following statements describes what occurs with energy as a result of the law of conservation of energy? a. the amount of energy before a process occurs is less than the energy after the process occurs. b. the amount of energy before a process occurs is greater than the energy after the process occurs. c. the amount of energy before a process occurs is equal to the energy after the process occurs. d. the amount of energy before and after a process occurs is always equal to zero.