using process of elimination you can eliminate condescending and pessimistic, and the passage doesn't really seem humorous either so your left with enthusiastic. The author seems to be happy and excited to share knowledge about how literature can make people feel, thus the best answer choice is probably enthusiastic
I lay in the soft green grass, watching the wind shake the delicate petals around me.
For every brief moment i think I want to stay here forever and never flee.
I’m taken back by the quiet trickles of water i here flowing in the stream.
I watch a brittle leaf fall into the damp bliss letting the stream take it on its course
At this moment I feel no remorse,
Because maybe the key to life is embracing what comes your way even if it’s at full force.
Answer:
You could do a short story on how much you like something or something you like to do
Hope this helps you!