Which of the following diseases is associated with the thyroid gland?

$A$ person appears fat,short,and stocky and has a stupid look and protruding tongue due to the hormonal deficiency of:

Read the given statements $:$
$(A)$ Hypothyroidism during pregnancy causes defective development and maturation of the growing baby.
$(B)$ Thyroxine does not require a secondary messenger.
$(C)$ Thyroxine plays a major role in the regulation of Basal Metabolic Rate $(BMR)$.
$(D)$ Hypersecretion of thyroxine could cause immunodeficiency.
How many of the above statements are correct?

Which one of the following hormones contains iodine?

Which of the following is a water-soluble hormone consisting of $32$ amino acids?

$A -$ Thyroid gland secretes a protein hormone called thyrocalcitonin $(TCT)$,which regulates the blood calcium levels.
$R - TCT$ is a hypercalcemic hormone.