Which of the following is the largest organ of the body?

The skin is the largest organ of the body, covering an average area of about 1.5 to 2 square meters in adults and weighing approximately 9 to 11 pounds. It plays several crucial roles, including acting as a barrier to protect internal organs, regulating body temperature, and permitting the sensation of touch, heat, and cold. The skin is made up of multiple layers, including the epidermis, dermis, and subcutaneous tissue, each contributing to its overall function and structural integrity.

In contrast, the liver, heart, and lungs, while they are vital organs with important functions, do not come close to matching the surface area or weight of the skin. The liver is the largest internal organ, and while it has many essential functions such as detoxification and metabolism, it remains smaller in overall size compared to the skin. The heart and lungs are crucial for circulation and respiration, respectively, but once again, they are much smaller than the skin in terms of area and weight. Thus, recognizing the skin as the largest organ highlights its importance in maintaining overall health and protection for the body.