Concept:The largest gland in the human body is the liver. Glands are organs that secrete substances for bodily functions.
Explanation:The liver is the largest gland, weighing about 1.2–1.5 kg. It performs over 500 vital functions.
It synthesizes proteins, produces bile for digestion, and filters toxins from the blood.
The pancreas helps in digestion and blood sugar regulation but is smaller.
Adrenal glands produce stress hormones and are located on kidneys.
The pituitary gland is the “master gland” but is tiny, located at the brain’s base.
Thus, the liver is the largest by size and weight.
Answer:D. Liver