Answer:
d. He thought he saw a Caroline Mathers ghost
Step-by-step explanation:
In this exercise, you have to select the correct option after reading "The fault in our stars" written by John Green.
When Hazel founds out about the existence of Caroline Mathers, she realizes why had Augustus stared at her the first time they met: "I pulled out my laptop and looked up Caroline Mathers. The physical similarities were striking: same steroidally round face, same nose, same approximate overall body shape (...) My healthy self looked very little like her healthy self. But our cancer selves might’ve been sisters. No wonder he’d stared at me the first time he saw me."