Here's a breakdown of why this is the climax:
* Rising Tension: Throughout the book, Delaney and her friends have been suspicious of the unusual circumstances surrounding their parents' sudden marriage and the fact that they are all living together in one house. They have been piecing together clues and their suspicions have been growing.
* The Revelation: During a trip to the beach, Delaney discovers a photo of her parents with another couple. This photo is a key piece of evidence that leads them to finally understand the truth.
* The Consequences: The discovery changes everything for Delaney and her friends. They are forced to confront the possibility that their parents' love story is not what they thought it was, and they have to decide how to handle this new information.
* Moving Forward: The climax sets up the rest of the story, as Delaney and her friends must navigate the emotional fallout of the revelation and figure out how to move forward with their lives.
While the climax is not a dramatic, action-packed scene, it's a significant turning point that sets the stage for the rest of the novel. The discovery of the truth about their parents' past is a catalyst for change and growth for Delaney and her friends, making it the true climax of "Crazy Summer."