Which vitamin is essential for red blood cell production and maintaining liver health?

Folic acid, also known as vitamin B9, is essential for red blood cell production and plays a crucial role in several bodily functions, including DNA synthesis and repair. It serves as a coenzyme in the production of nucleic acids, which are vital for the formation of red blood cells in the bone marrow. A deficiency in folic acid can lead to megaloblastic anemia, characterized by larger-than-normal red blood cells, which is a clear indication of impaired red blood cell production.

Moreover, folic acid supports liver health by contributing to the metabolism of fats and proteins. It helps in the production and maintenance of new cells, particularly during periods of cellular growth, making it vital during pregnancy and for individuals recovering from liver damage or illness. Unlike the other vitamins listed, folic acid specifically targets both the formation of red blood cells and supports liver function, making it the correct choice in this context.