I think C because its talking about what is behind the story who did it how and why
Answer:
A. He was concentrating hard on his book
Based on the context in which "very wise" was used, it is an adjective phrase.
<h3>What is an adjective phrase?</h3>
This refers to a phrase that is doing the work of an adjective which is to modify a noun or pronoun.
In the above sentence, the pronoun, "you" was modified by saying the person was quite wise. This is therefore an adjective phrase.
Find out more on adjective phrase at brainly.com/question/139793.
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4,2,6,1,3,5,7 Hope this helps!! :)