Multiple choice Which of the following correctly defines commensals? An organism that lives in the host's body and also helps the host An organism that lives in the host's body and harms the host. An organism that lives in the host's body and does not affect the host An organism that does not have any nucleus Reveal answer Fill a bubble to check yourself C Correct answer Explanation The organisms that live in a host's body and benefit from it, without harming or helping the host are called commensals.