Final answer:
Cells require Vitamin B-12 to make coenzymes for various processes including transfer of CH₃ groups in folate metabolism. It is vital for DNA synthesis and cell metabolism. The correct answer to the question is A. Vitamin B-12.
Step-by-step explanation:
The vitamin cells require to make coenzymes that participate in a variety of cellular processes, including the transfer of CH₃ groups in the metabolism of folate, is Vitamin B-12. This vitamin acts as a coenzyme in the synthesis of DNA, as well as in the metabolism and the renewal of cells, including the synthesis of hemoglobin in erythrocytes. The B vitamins, including folate and Vitamin B-12, play integral roles as coenzymes in various biochemical reactions in the body, from energy production to DNA synthesis. A deficiency in these can lead to significant health issues such as anemia.
Important sources of Vitamin B-12 include animal products like meat, fish, eggs, and dairy, as it is not generally found in plant foods. Vegans or individuals following a plant-based diet are often recommended to consume fortified foods or supplements to maintain adequate levels of Vitamin B-12.
Therefore, the correct option in the final answer is A. Vitamin B-12.