Answer:
1) Circular Folds
2) Villi
3) Microvilli.
Explanation:
Small intestine is one of the most important organ of the body and plays n important role in the process of digestion. The dedenum, jejenum and ileum are the parts of small intestine.
The small intestine has villi that helps in increasing the surface area for digestion and absorption. The circular folds has the highest diameter and large in the structure than the villi and microvilli. Microvilli has the smallest structure among the villi and microvilli.
Thus, the order are option (c), (b) and (a).
The human skin is the protective layer of the human body against the external forces like the temperature, sharp objects, microbes, fungi and other related materials that can penetrate and weaken the body however, the integumentary system prevents any harm come to the organism. The dermis is the skin area which has different structures that perform different functions.
It is C or A,because i did this in school and it was a chemical reaction.