Final answer:
The understanding of a gluten-free diet for a child with celiac disease is shown when the mother chooses chicken leg and corn on the cob, as these are naturally gluten-free foods. Foods containing gluten, like macaroni and cheese, should be avoided.
Step-by-step explanation:
The mother of a child with celiac disease shows that she understands which foods to avoid when she chooses chicken leg and corn on the cob. People with celiac disease must avoid gluten, a protein found in wheat, barley, and rye and therefore in foods like bread, pasta, and many baked and packaged goods. The correct food options for someone with celiac disease are naturally gluten-free foods like meats, fruits, vegetables, and most dairy products.
Options like bacon and eggs and tuna salad and rice cakes may also be suitable if the bacon is not glazed with a sauce containing gluten, the eggs are not cooked with additives containing gluten, the tuna salad doesn't contain fillers or dressings with gluten, and the rice cakes are specifically labeled gluten-free. However, the option clearly containing gluten and to be avoided is macaroni and cheese, as macaroni is typically made from wheat. Avoiding gluten is essential for the management of celiac disease symptoms and prevention of long-term complications.