Complexion of skin in human beings is a mixed effect of
A.Collagen, melanin and haemoglobin
B.Carotene, keratin and haemoglobin
C.Carotene, melanin and haemoglobin
D.Keratin, albinism and melanin

Hint: Skin complexion is an effect of inheritance from polygenesis. Determination of basic traits, e.g., skin colour can be determined by several genes (polygenes). These genes individually have a minor impact.

Complete answer:
First we should know about skin to answer this question. In surface area and weight, skin is one of the biggest organs in the body. Two layers are made up of the skin: the epidermis and the dermis. The hypodermis or subcutaneous fatty tissue lies beneath the dermis. There are three principal roles of the skin: defence, control and sensation.
Now, let us find the solution from the options-
A big part of the skin is collagen. It plays a role in skin strengthening, elasticity and hydration. The body creates less collagen when you age, contributing to dry skin and winkles formation. Keratin is known as a protective protein that can be found in our hair, skin and nails and is a main structural feature. In skin goods, functional keratin may enhance the protective outer layer, keeping the skin healthy. Albinism is a congenital condition characterised by the complete or partial lack of skin, hair and eye pigment in humans. People with albinism have skin that is very susceptible to exposure to light and the sun. Thus, the options A, B, and D are incorrect.
Skin colour is determined by three variables: melanin, carotene, and haemoglobin. The presence of melanin, a dark pigment formed by melanocytes is a specialized cell. The aggregation of carotene with yellow pigments. The blood colour (i.e., haemoglobin) was reflected in the epidermis. Screening out excessive ultraviolet radiation is the primary feature of melanin. Although the darker races have significantly more melanocytes, all races have some melanin in their skin. An albino is a person who is genetically unable to generate any melanin.

Hence, the correct answer is option (C)

Note: Human skin appears in a wide spectrum of colors, from dark brown to nearly white tones. While the skin colour of a person is affected by various factors, its pigment content called melanin is the most important.