Answer:
d) Loss of the villi surface area and a decrease in absorption of nutrients, causing malabsorption
Step-by-step explanation:
In people with celiac disease, the immune system reacts abnormally to gluten (protien found in wheat, rye, barley and oats) causing small bowel damage.
The tin, finger like projections which line the bowel (villi) become inflamed and flattened. This is referred to as vilous atrophy.
Villous atrophy reduces the surface area of the bowel available for nutrient absorption, which can lead to various GIT and malabsorptive symptoms. Symptoms can also be caused by inflammation in other parts of body.
Hence ,d) Loss of the villi surface area and a decrease in absorption of nutrients, causing malabsorption is the right answer.