Respuesta :
We are required to state which is an adjective phrase.
The adjective phrase is "extremely happy".
- An adjective phrase is a phrase that collectively modifies or describes a noun or pronoun and which can usually be used both attributively and predicatively, can be graded, and be modified by an adverb.
In the sentence,
After scoring a goal, he was extremely happy.
Extremely happy explains more about how happy the boy was after he scored the goal.
Extremely happy is the adjective phrase modifying the pronoun "he".
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