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.
It is place because it is not saying a specific time.
Answer:
There are many enjoyable video games out there but, Mario Brothers is still my favorite one.
Explanation: