Metaphor is in the lines -
"when all at once I saw a crowd a host of golden daffodils. "
here an indirect comparison is made between the daffodils and people
it's also a personification
Anti-climax greatly annoys readers. If they're going to put the time into reading something because it has an engaging plot, they're going to expect an equally interesting climax to arise out of that plot. If the readers don't get that, they're going to feel cheated.
I hope this helps........
Answer:
I believe the last one is the answer