Which gland is often referred to as the ‘Master Gland’ of the human body?

The correct option is Pituitary.

The pituitary gland is a small, pea-sized endocrine gland situated at the base of the brain, just beneath the hypothalamus.

It is often referred to as the "Master Gland" of the human body because it produces and secretes key hormones that regulate and control the function of several other endocrine glands, including:

1. Thyroid Gland: Stimulated by Thyroid-Stimulating Hormone (TSH) released by the pituitary.
2. Adrenal Glands: Regulated by Adrenocorticotropic Hormone (ACTH).
3. Gonads (Ovaries & Testes): Controlled by Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH).

Although the pituitary gland acts as the master controller for these glands, its own function is modulated by signals from the hypothalamus.