The correct answer is option-1, which states that "amino acids and fatty acids can be the sources of cellular energy in a human body."

Let`s dissect each option to better understand why option-1 is correct and the others are not:

Option-1: Amino acids and fatty acids can both be used as sources of cellular energy in the human body. Amino acids are the building blocks of proteins and can be broken down and converted into energy. Fatty acids, on the other hand, are a major component of dietary fats and can also be metabolized for energy production.

Option-2: This option states that fatty acids and vitamins are the sources of cellular energy. While vitamins play a crucial role in various metabolic processes, they themselves are not directly utilized as sources of energy.

Option-3: This option suggests that hormones and vitamins can be sources of cellular energy. Hormones are chemical messengers that regulate various bodily functions, but they are not directly used as sources of energy.

Option-4: This option suggests that all four substances (amino acids, fatty acids, hormones, and vitamins) can be sources of cellular energy. While amino acids and fatty acids do provide energy, hormones and vitamins do not serve this purpose.

In summary, amino