Final answer:
The best food choice for someone with thrush is consommé, as it is gentle on the mouth and does not promote yeast growth, unlike acidic or sugary foods.
Step-by-step explanation:
An appropriate food choice for a patient who has thrush would be d. consommé. Thrush, or oral candidiasis, is an infection where the fungus Candida albicans overgrows in the mouth, leading to white patches that may be associated with bleeding. Foods that are acidic, like citrus juice, can be painful to consume when one has oral thrush due to tender and inflamed oral mucosa. Saltine crackers are likely to be too rough on the lesions, while ice cream, although soft, could exacerbate the thrush due to its sugar content, which yeasts thrive on. On the other hand, consommé is a clear broth that is gentle on the mouth and does not promote yeast growth, making it a suitable choice.