Choose the set of words that is an adjective clause: i hardly recognized my car, which had undergone a complete make-over.

The answer is *Which had undergone a complete makeover.* Adjective clauses identify the word it's modifying. 

Atahualpaemperor of the inca empire who rose to the throne after winning a civil war between him and his brother.  -he refused to become a spanish vassal or christian.-francisco pizarro kidnapped him and demanded a huge ransom.  -pizarro's secretary described him as "a man of thirty years, good-looking and poised, somewhat stout, with a wide, handsome, and ferocious face, and the eyes flaming with blood."-after the ransom was paid, atahualpa was killed by pizarro