The answer is the difficulty of determining what is real. Typical modernists had a loss of meaning in the modern world, so there themes included the question of "What is real?" There was a search for meaning in a world without God, and a search for self with a critique of traditional values.
I don't understand what you mean
As far as I can see, I notice that in the first paragraph (option 1) only promotes the notion of understanding and trust. In this paragraph, Michelle tries to comfort Phillip by making him understand that the situation has got out of hand and the guitar cannot be brought back, therefore, it is better for them to maintain a healthy conversation as well as a good relationship. However, Michelle herself seems unsettling because of the earlier effort she has made to search the guitar, yet her speech embodies the value of understanding one another to build trust among all.