The narrator opens the Prologue with a tribute to the beauty of the cycle of life.
Here are the lines that the narrator use to open the prologue:
Whan that Aprill with his shoures soote
The droghte of March hath perced to the roote
This lines indicates the changing seasons that describe the return of the spring season. From the options given above, the beauty of the cycle of life is the only one that make sense.