the undercover agent still investigating the case is a run-on sentence
First you relate the book to an experience from your own life. Then you tell an example of how the story relates to your life, but use fictional details when you do this. Last relate the story to Kennedy's view of life, if it agrees or disagrees with Kennedys view.
The road less traveled by is a fancy way of saying " That road nobody takes because they're all too afraid to. "
it basically means that it's the road less taken, e.g. " There have always been two roads before you enter the town of Corydon, Washington, however, no one has ever taken to the road to the left which doesn't yet have that fancy sign like the other roads do. The townsfolk say that road leads to a cliff, and/or just drops to nothing. So one day just out of spite of all the scaredy-cats I took that road to right, the road less traveled by "
I hope this helps if any!
