What is the primary function of B vitamins?

B vitamins play a crucial role in energy metabolism and are essential for the production of red blood cells. Each B vitamin has specific functions, but collectively, they assist in converting the carbohydrates, fats, and proteins from food into energy that the body can use. This process is vital for maintaining energy levels and supporting overall metabolic health.

In addition to their role in energy production, certain B vitamins, such as B12 and folate, are integral to the formation of red blood cells. They help in synthesizing DNA and RNA, which is essential for cell division and the generation of new red blood cells. This function is particularly important for preventing anemia and ensuring adequate oxygen transport throughout the body.

The other choices describe functions that are not primarily attributed to B vitamins. Regulating water balance is mainly a function of electrolytes and minerals, enhancing taste perception relates to sensory functions rather than nutrient metabolism, and building muscle mass is primarily influenced by proteins and amino acids rather than B vitamins alone. Thus, the appropriate focus for the primary function of B vitamins is indeed their critical role in energy metabolism and red blood cell production.