Question

My uncle is the one who bought me a puppy for my birthday.

Answer 1

The answer to your question is A. noun clause
 
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Answer 2

Answer:  The correct answer is :  b.  adjective clause

Explanation:   Adjective clauses replace adjectives. In some cases these clauses connect nouns and adjectives using a relative pronoun. The most commonly used relative pronouns are: who, that, which, whose, whom. This type of clause also provides additional information of the noun.