The faulty functioning of an endocrine gland can make a person very short or very tall. This gland is:(a)thyroid (b)pineal (c)adrenal (d)pituitary

(d) pituitary.

The pituitary gland secretes a hormone, known as growth hormone (GH) controls the growth and development of the human body. The deficiency of the growth hormone (GH) can make a person very short, while the excess of this hormone can make a person very tall.