NEED HELP!!!!

When people are sick, it is often recommended that they consume a lot of liquids, particularly water. What is the biological basis of this advice?

OPTIONS:
A.
Water will help flush toxins out of the body.
B.
Drinking will distract them from their illness.
C.
It is always easier to drink than to eat if you are sick.
D.
They are probably sick because they were dehydrated.

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