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

'Exophthalmic goitre' $(Grave's\,disease)$ is caused due to

On an educational trip to Uttaranchal,Ketki and her friends observe that many local people have swollen necks. Please help Ketki and her friends to find out the solutions to the following questions.
$(a)$ Which probable disease are these people suffering from?
$(b)$ How is it caused?
$(c)$ What effect does this condition have on pregnancy?

Cretinism,mental retardation,low intelligence quotient,abnormal skin,deaf-mutism,etc.,are the results of:

$BMR$ is controlled by

Which of the following statements is correct?