I’m not sure what your really asking but if it’s something along the lines of how does an author convey humor here you go.
He uses dictation and tries to create a situation in which the characters are being reckless. Hope this helps
The last one, Before his European travel- the highlight of his summer-... ect.
is the right answer
A few issues...at the end,the last sentence, you use a passive perspective, where as the rest is more assertive...you should keep it one or the other. Your 3rd sentence has a future tense sound whereas the rest is present tense...make sure that is also present tense
