Question

Which sentence has an adjective clause?

Answer 1

A.

Mike rode his bike on mountain trails because he found them challenging.

Answer 2

 An adjective clause is simply a group of words with a subject and a verb that provide a description. The clause starts with a pronoun such as who, whom, that, or which or an adverb such as when, where and why. I believe that based off this, the answer would be A. Hope this helps!