Final answer:
Hazel can't go to Amsterdam to meet Peter Van Houten due to health issues.
Step-by-step explanation:
In the book 'The Fault in Our Stars' by John Green, Peter Van Houten responds to Hazel's email. However, Hazel can't go to Amsterdam to meet him due to health issues. Hazel has been battling with thyroid cancer that has spread to her lungs, making travel and physical exertion difficult for her.The reason Hazel cannot go to Amsterdam to meet Peter Van Houten after he has responded to her e-mail in 'The Fault in Our Stars' is primarily due to financial constraints. Hazel is a teenager living with cancer, and her medical treatments and care are expensive, which puts a financial strain on her family. Despite her desire to meet the reclusive author and discuss the fate of the characters in his book, her family cannot afford the trip. Her health condition also poses potential risks for travel, but the immediate obstacle mentioned in the book is the cost associated with the trip.