Answer:
I feel as if this has a far wide meaning, and can change beyond different people. To live as if you are dying is to live life to it's fullest, and basically do everything you'd want to do before facing death.
Answer: A. Extraordinarily important.
Explanation: Based on the information presented in the excerpt, we can infer that the information in the wireless message was extraordinarily important, because all the signs the characters give each other without even saying a word, like that the twitching of "Blinker's" eyes became more pronounced as he was reading the message and also the seriousness of de Grey while he delivered the message.
