Question

In which sentence is early correctly used as an adjective? A. Radio advertisements for new cars started early this year. B. Joan's ride arrived early, so she had to leave without breakfast. C. Tim tries to leave school at an early hour to get to his job on time. D. Winter comes too early in the north, or so the people in Wisconsin think.

Answer 1

Your answer is C.
Adjective definition: a word or phrase naming an attribute, added to or grammatically related to a noun to modify or describe it.

Early is the adjective, hour is the noun, and they are side by side. Here's some examples of other adjectives used properly:

I like "blue" skies and "fluffy" clouds.
He is a "nice man."
It was a "cold day."
They are "good" people.

Hope this helped