Which sentence has an adjective clause?

Question

Mike rode his bike on mountain trails because he found them challenging.
Gary donated to charity whenever he could.
Liz, who could always make people laugh, was loved by the whole block.
Ever since Adam was a little boy, he had helped his father in the fields.

Answer 1

Sentence three has an Adjective Clause.

An adjective Clause comes after the noun it modifies and it always tell something about the noun and there are some key words to look out for such as which, that, who, whom, and whose.