Multiple Choice
Which of the following statements is TRUE regarding the bacteria present in the stomachs or intestines of humans?
A) Some stomach bacteria have been associated with cancers.
B) Many intestinal bacteria aid in digestion.
C) Intestinal bacteria can produce important vitamins.
D) Intestinal bacteria may play a role in immune system function.
E) All of these choices are correct.
Correct Answer:

Verified
Correct Answer:
Verified
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