Select the correct answer. Which of these is a function of the digestive system? A.
transports nutrients to other organs
B.
eliminates nondigestible waste
C.
regulates blood flow
D.
builds big molecules from smaller molecules

A function of the digestive system is eliminates non-digestible waste (option B).

Explanation:

The digestive system performs the functions of processing food to make it easier to digest, absorbing nutrients and excreting wastes that are not usable by the body.

The excretory function of the digestive system —elimination of non-digestible wastes— is performed by the large intestine or colon, forming the feces.

The other options are not correct because:

    A.  To transport nutrients to other organs is a function of the circulatory system.

    C. To regulate blood flow depends on the nervous system.

    D. To build big molecules from smaller molecules is a synthesis process that occurs at the cellular level.