Final answer:
The nurse should suggest cold foods and beverages to aid in the management of treatment-related changes in taste.
Step-by-step explanation:
The nurse should suggest suggest cold foods and beverages to aid in the management of treatment-related changes in taste. Chemotherapy can often cause changes in taste, making some foods less appealing or causing them to taste differently. Cold foods and beverages can help numb the taste buds and make food more palatable. Encouraging spicy foods may actually exacerbate the taste changes, while discouraging the use of sugar-free gum and limiting fluid intake during meals are not directly related to managing taste changes.