A nurse is assisting with meal planning for a client who has hypothyroidism. The nurse should reinforce with the client that she should increase her daily intake of which of the following nutrients?

A. Fiber: Helps relieve constipation (common in hypothyroidism) and supports weight control, so intake should be increased. B. Polyunsaturated fats: Heart-healthy, but no specific increased requirement in hypothyroidism. C. Monounsaturated fats: Beneficial for cardiovascular health, but not uniquely emphasized in hypothyroidism management. D. Protein: Adequate protein is important, but increasing fiber is the priority due to common gastrointestinal symptoms.