Final answer:
The broken record in the book represents the relationship between Henry and Marty.
Step-by-step explanation:
The broken record in the book represents the relationship between Henry and Marty. The broken record is a symbol of their strained and troubled relationship. It reflects their inability to communicate and understand each other, as well as their unresolved issues from the past.
The record serves as a reminder of their broken connection and the need for them to confront their emotions and work towards reconciliation.