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.
Sodium
Atomic mass: 22.989769 u
Atomic number: 11
Protons: 11
Neutrons: 12
Electrons: 11
Protons and electrons are the same number, and the atomic number is the amount of electrons and protons it will have.
Answer:D
Explanation: Because she needs three sources, and the librarian can help her with that
As the poem 'The Road Not Taken' broadly emphasizes the role of decision-making in one's life. When one has many choices, it is very crucial to make the right choice. Right decision will be beneficial to the individual in the long term. ... The poet or traveller sighs when he refers to the decision he has made.