Question

is the group of words in bold a phrase or a clause?
the national fire protection agency instituted a color - coding system for fire hydrants that provides firefighters with crucial information about the water sources.
phrase
clause

Explanation:

A phrase is a group of words without a subject - verb relationship, while a clause has a subject and a verb. The bolded group "The National Fire Protection Agency...for fire hydrants" is a group of words that functions as a noun phrase (the subject part and the object part related to the main verb "instituted") and does not contain a subject - verb combination within it as a clause would. It is a phrase because it lacks a finite verb (a verb that shows tense, number, etc.) acting as a predicate within its structure.

Answer:

phrase