The correct answer is B. Father
Before he left the house modifies father because it further explains the father's qualities, that is he is a person that's left the house.
Most likely the troubleshooting section.
Hope this helps!
~{Oh Mrs.Believer}
Answer:
hectic, off, different, restless, chaotic, whatever, crazy, questionable, kind of disturbing, and annoying.
Explanation: