What part of the sentence is a dependent clause a, b or c

How did the older men calm the younger ones down when they learned from some of the prisoners where they were? (chapter 3 of the book night)

(01.03 mc) what does the conversation between marcus and his father reveal about their characters? a marcus doesn't agree with the regulations put in place, but his father does. b marcus's father doesn't agree with the regulations put in place, but marcus does. c marcus's father thinks the regulations provide security, and so does marcus. d marcus wants stricter regulations to be put in place, and his father agrees.

Which best describes the meaning of the term “universal truths”?