Question

the word hydrant contains the root hydro. what does the root hydro mean?
water
fire
heat
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Explanation:

The root "hydro" has its origin in Greek, where it means "water". A hydrant (or fire hydrant) is a device that provides access to water, typically for firefighting purposes. Among the options, "water" aligns with the meaning of the root "hydro". "Fire" is related to what a hydrant is used for (fighting fire) but not the meaning of the root, and "heat" is unrelated to the root "hydro".

Answer:

water