Which sentence uses a passive form of the verb justify?
A )Trevon's mother justified her son's actions by referring to his morals.
B )Celia felt justified in missing class to help someone in need.
C ) Kevin had justified his misconduct with half-truths.
D ) Samantha's lack of civility was justified by Willem's rudeness.
The last option uses 'was justified' to describe Samantha's lack of civility. The object of the action becomes the subject of the sentence. So, the answer is D. Good luck ^^