Answer:
Correct Answer: D. Answers A and C.
Explanation:
The other guy on this question was incorrect, i failed that question so here is the anwser.
the answer would be D. Presence of cell membranes.
As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body.
