Final answer:
Vegetables are allowed and recommended in a gluten-free diet for individuals with Celiac's disease, as long as there's no cross-contamination with gluten.
Step-by-step explanation:
Veggies are indeed allowed in the diet of a client with Celiac's disease. People with this condition must adhere to a gluten-free diet, as consuming gluten can trigger an autoimmune response leading to damage in the small intestine and impede nutrient absorption, causing health complications such as malnutrition, diarrhea, and increased risk for certain cancers. Vegetables, being naturally gluten-free, are a healthy part of a celiac patient's diet. However, cross-contamination with gluten-containing foods should be avoided during planting, processing, and preparation.