Another term for peacefulness or calmness is definitely tranquility.
The other words have nothing to do with the feeling of peacefulness of calmness, rather with politics.
It's B. tragedy, hope this helped :D
The correct answer is letter A, the information from the wireless message was extraordinarily important. Based from the non-verbal cues given by the character who was reading the message, it seemed that the matter was very important and that action should be made quickly.
A) the idea that he is under a lot of stress because he wants something he can’t get