Correct Answer: Melanin

Solution : The correct option is Melanin.

Melanin, a pigment generated by specialised cells known as melanocytes, is principally responsible for the colour of human skin. Melanin is responsible for the varied tones of skin colour found in different people and populations. Melanin is classified into two types: eumelanin, which is brown to black in colour, and pheomelanin, which is red to yellow in colour. A person's skin colour is determined by the amount and kind of melanin in their skin, as well as other variables such as genetics and exposure to sunshine.