उत्तर : 2. "पिट्यूटरी"
व्याख्या :

Pituitary gland: It is a small pea-sized gland. It is often called the master gland as it controls several other hormone glands in our body. It is located in the brain between Hypothalamus and the Pineal gland. So, the pituitary gland in human beings secretes more than three hormones.