I think the answer would be D. Hope this helps
The bottom left graph is the best answer
I believe it is that true love changes with the changing seasons because throughout the poem, the author discusses how her emotions change towards the situation. At 14 she was shy and possibly ashamed of their love but learned to accept what they had and enjoyed it until he went away. While he was gone, she missed his presence and continued to wait for his return. The poem is basically a story of their changing love and how it affected her.