It is an allusion The poem uses Christian imagery regarding the Apocalypse and Second Coming allegorically to describe the atmosphere of post-war Europe.
The answer to the question you don't seem to be getting a very clear response on would indeed be the letter C. What can i say except your welcome.
Answer:
1) what time did you get up this morning?
2) when did you last travel by train?
3) how many times a day to you eat?
4) is there asny coffee left at home?
5) why do you think he has not come?
The - determiner. Rattlesnake - noun. Is - verb. The - determiner. Most - adverb. Popular - adjective. Snake - noun. In - preposition. Our - determiner (or adjectival pronoun). Country - noun.