Which of the following are not under the control of thyroid gland?

A. Maintenance of water and electrolyte balance
B.  Regulation of basal metabolic rate
C. Normal rhythm of sleep-wake cycle
D. Development of immune system
E. Support the process of R.B.Cs formation 

Choose the correct answer from the options given below. 

C and D are not under the control of thyroid hormones. A, B and E are under the control of thyroid hormones.
A. Thyroid hormone indirectly affects water and electrolyte balance by influencing the function of other organs involved in fluid regulation, such as the kidneys. It helps regulate the balance of sodium and water in the body.

B. Thyroid hormone is a major regulator of basal metabolic rate (BMR). It increases the metabolic activity of cells throughout the body, influencing processes such as energy production, protein synthesis and heat generation.

C. The sleep-wake cycle is primarily regulated by the circadian rhythm, which is influenced by the suprachiasmatic nucleus (SCN) in the hypothalamus. Melatonin is directly responsible for controlling the sleep-wake cycle.

D. The development and functioning of the immune system are not primarily controlled by thyroid hormones. Thymosines, which regulate the differentiation of T-lymphocytes, can be related to the development of immune system.

E. Thyroid hormones stimulate the production of erythropoietin, a hormone that promotes the production of RBCs in the bone marrow.