The key point in here is when he says "of course not" to reply the child and then took her onto his lap and hugged her. In then, he does not show confident enough to talk about the subject with her. He shows as well how he stills remind and cannot scape from his experience in war and how he keep remind it on his mind. <em>This is why option B is correct, the texts 2 and 4. </em>
A noun is a person, place, or idea
Since university is a place it is a NOUN
Hope this helped!
~Just a girl in love with Shawn Mendes