The correct answer is metaphor.
A metaphor is a rhetorical figure of speech where two or more things are symbolically compared, without using the words such as like or as (because that would be a simile). This whole poem is symbolical/metaphorical - it talks about the passage of time and how everything is transient and fleeting.
Answer: B. noun, a useful or valuable thing, person, or quality
Explanation:
Hope this helps!!!
I’m pretty sure it’s c I may be wrong tho