The correct answer is C. 9.45 kilocalories.
One gram of fat contains 9.45 kilocalories of energy. This is more than twice the amount of energy contained in one gram of carbohydrates or protein, which is 4.18 kilocalories. The reason for this is that fat is a more concentrated form of energy. It is made up of long chains of carbon and hydrogen atoms, which are packed together very tightly. When these chains are broken down, they release a lot of energy.
Fat is an important source of energy for the body. It is also a good source of essential fatty acids, which are necessary for the proper functioning of the body. However, it is important to eat a healthy balance of fat, carbohydrates, and protein. Too much fat can lead to weight gain and other health problems.
The other options are incorrect because they do not represent the correct number of kilocalories of energy released from one gram of fat.