A how-to manual written for kindergarteners that uses sophisticated, difficult vocabary.
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
Ask if the person is available to talk
C) It causes conflict between him and his parents. Explanation: The narrator spent most of his time listening to music and joined musical classes and bands. Due to this his focus from studies vanished and grades were effected badly.
Hope this helps