To answer this question, you need to understand the role of different vitamins in cell differentiation and proliferation.
Option A) Vitamin B12 - This option is incorrect because vitamin B12 is primarily involved in the formation of red blood cells and the maintenance of the nervous system. It does not play a significant role in controlling cell differentiation and proliferation.
Option B) Vitamin B6 - This option is incorrect because vitamin B6 is involved in various metabolic processes, such as amino acid metabolism and neurotransmitter synthesis. While it plays a role in cell growth and division, it is not specifically involved in controlling cell differentiation and proliferation.
Option C) Vitamin D - This option is correct because vitamin D is involved in controlling cell differentiation and proliferation. It regulates the expression of genes involved in cell growth, differentiation, and apoptosis (programmed cell death). Vitamin D receptors are present in many tissues, including cells of the immune system, and play a crucial role in maintaining proper cell function.
Option D) Vitamin K - This option is incorrect because vitamin K is primarily involved in blood clotting and bone metabolism. It does not have a direct role in controlling cell differentiation and proliferation.
The correct answer is C) Vitamin D. This option is correct because vitamin D is involved in controlling cell differentiation and proliferation by regulating gene expression.