Which act as catalysts in protein, fat, and carbohydrate metabolism?

Question

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Water-soluble vitamins, such as B vitamins and vitamin C, act as coenzymes in many metabolic processes involved in the breakdown and utilization of proteins, fats, and carbohydrates. They do not provide energy themselves, but they help to facilitate the conversion of nutrients into usable forms of energy. Fat-soluble vitamins (option A) are important for many functions in the body, but they do not play as direct a role in metabolism as water-soluble vitamins. Minerals (option C) also play important roles in metabolism, but they act more as structural components or as elements involved in enzymatic reactions, rather than as coenzymes. Fibers (option D) are important for digestion and bowel regularity, but they do not directly affect metabolism.

Which Act as Catalysts in Protein, Fat, and Carbohydrate Metabolism