Question

bacteria in the large intestine ______.
a break down some undigested food
b produce vitamins
c produce gas
d all apply.

Explanation:

Large intestine bacteria break down undigested food (e.g., fiber), produce vitamins (e.g., B and K), and generate gas (byproduct of fermentation). All options A, B, and C are correct.

Answer:

D. All apply.