All purpose flour has about 9% gluten in it. When someone with Celiac disease eats gluten, their body has an immune response that attacks their small intestine.
This justifies what answer for what question? Q & A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Is All Purpose Flour safe for someone who has celiac disease?
no