Which of the following best describes the role of vitamins?

Vitamins play a crucial role in the body by supporting various metabolic processes that are essential for maintaining health. They serve as helpers in the biochemical reactions that occur in your body, which can include catalyzing reactions for energy production, aiding in the synthesis of DNA, and supporting the immune system. Each vitamin has specific functions and benefits, and they work in harmony to assist in growth, repair, and overall bodily functions. This makes their presence in a balanced diet necessary for optimal health.

While the other options suggest avoidance, negative effects on weight, or misleadingly imply that vitamins can replace other healthy habits like exercise, they do not accurately reflect the essential contributions of vitamins to human health and wellness.