The correct option is
B Hypothyroidism
A. Hypoparathyroidism is the hyposecretion of parathyroid hormone.
B. Hypothyroidism is the hyposecretion of thyroid hormone.
C. Hyperparathyroidism is the hypersecretion of parathyroid hormone.
D. Hyperthyroidism is the hyper secretion of thyroid hormone.
Cretinism is the retarded mental and physical development due to hyposecretion of thyroid hormones.
So, the correct answer is 'Hypothyroidism'.