This phase represent one of the ethical transitions in one`s life span and is characterized by fast paced growth and change which are second only to those at infancy.Which option needs to be changed to correct the sentence?

The colleagues remained happy with the corrupt boss even though I requested them to shun him. Here the word `happy` is _____. Option A: a noun , Option B: an adjective , Option C: an adverb, Option D: a conjunction, correct answer is: an adjective

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