Which of the following has the highest daily value percentage?

Vitamin B-6 has a significant role in the body, primarily in protein metabolism, cognitive development, and the production of neurotransmitters. It also plays an essential part in the synthesis of hemoglobin and is crucial for immune functions. When considering daily value percent, Vitamin B-6 is often highlighted for its contribution to various metabolic processes, making it essential for overall health.

The daily value percentages are based on the amount of a nutrient in a serving of food compared to the daily recommended intake. Vitamin B-6's impact on several bodily functions contributes to a higher percentage because typical dietary sources provide substantial amounts relative to the recommended daily allowance.

In contrast, the other options like Iron, Riboflavin, and Vitamin B-12 also play important roles in nutrition but may not reach the same daily value percentage for a standard serving size, influencing why Vitamin B-6 stands out in this context. For example, while Iron is crucial for oxygen transport, the daily value related to it can be lower based on dietary sources compared to Vitamin B-6, which may be consumed relatively more frequently in everyday diets.