Answer:
dense microvilli
Explanation:
the modification of the simple columnar epithelium that allows for efficient absorption along portions of the digestive tract is dense microvilli
because which cell line villi is cover by small projection is the microvilli
and when this projection increasing surface area of small intestine and that allow chyme for more contracts of small intestines wall
and by increasing the more contacts that will cause more efficient the food absorption so here correct option is dense microvilli
