Throughout the novel there are circumstances in which Gatsby shows he is modern such as his clothes, his car and even his house. These are all things that are different from other for example Tom who is old fashioned and the opposite of Gatsby.
is there a text or paragraph that would explain why he is in any of those moods?
It would be #1, since personal experiences are usually irrelevant in those formats. Hope this helps. :)
In this passage i will tell you about how social media has a impact on society