The correct option is D Pituitary
The endocrine system is a network of glands in our body that make the hormones that help cells talk to each other. They’re responsible for almost every cell, organ, and function in your body. A deficiency of growth hormone secretion before puberty (by the end of which the synthesis of new bone tissue is complete) results in pituitary dwarfism. An excess of growth hormone in children results in gigantism; these children grow to be over 7 ft (213 cm) in height and have disproportionately long limbs. Excess growth hormone produced after puberty has little effect on the growth of the skeleton, but it results in a disease affecting terminal skeletal structures known as acromegaly.
So, the correct option is option D.