The passenger is Mr. Jarvis Lorry
The answer is really:....
B) by giving a portrait a fearful lifelikeness
The only sentence which is not a proposition is Sit down, because this is imperative, you are ordering somebody to do something, whereas propositions merely inform.
It sounds like to me that its talking about the theme or the main idea so it will be about how you will have to stay close to your friends and trust each other.
