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

so we know the answer cannot be c because no insect or animal starts as an adult

the answer is a. a swimming larvae

because since they are sea animals they automatticaly have to know how to swim they cannot just sink to the bottom

sorry if this is the incorrect answer.

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