Which is the largest organ of the human body?

(a) Heart

(b) Skin

(c) Liver

(d) Brain

The correct answer is (b) Skin

The skin is the largest organ of the human body, covering an average area of about 1.5–2 square meters in adults.

It acts as a protective barrier between the internal organs and the external environment, shielding the body from germs, harmful chemicals, and physical injuries.

The skin also helps in:

Regulating body temperature through sweating and blood flow control.

Sensing touch, pressure, heat, and pain with the help of nerve endings.

Preventing water loss and keeping the body hydrated.

Producing vitamin D when exposed to sunlight.

Why not the other options?

(a) Heart – It is a vital organ but not the largest. It pumps blood throughout the body.

(c) Liver – It is the largest internal organ but still smaller than the skin.

(d) Brain – Controls body functions but is smaller compared to skin.

Thus, the skin is the largest organ of the human body, performing multiple vital functions for survival.