Which of the following is a modification of the simple columnar epithelium that allows for efficient absorption along portions of the digestive tract?
- dense microvilli
- thin and permeable
- fibroblasts
- cilia

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

give me the list of answers to answer this question.

answer; /// i believe the answer is (phenylketonuria);