What food can a patient needing a wheat-free diet safely consume?

Rice is a safe option for individuals who need to adhere to a wheat-free diet. It is a gluten-free grain, meaning it does not contain the proteins found in wheat that can trigger adverse reactions in individuals with celiac disease or a wheat allergy. Rice can be consumed in various forms, including brown, white, or wild rice, and can be used as a base for many dishes, making it versatile for those needing to avoid wheat.

In contrast, the other options contain wheat or wheat-derived products. Graham crackers typically contain whole wheat flour, making them unsuitable for a wheat-free diet. Bran flakes are generally made with wheat bran, which would also pose a risk. Couscous, a type of pasta made from durum wheat, is clearly not a safe choice for those needing to avoid wheat. Therefore, rice stands out as the only appropriate food choice for someone on a wheat-free diet.