Macy couldn't help but notice everyone looking at her as she walked down the hall. She could hear their whispers as she walked to homeroom on the first day of school. During the summer, Macy's hair had grown so much that it reached the middle of her back. Although it was normal for girls to have long hair, Macy had always had short hair and refused to grow it out. Therefore, all of her classmates were astonished by her Rapunzel-like transformation. However, Macy had a good reason for her change of heart. She wanted to grow her hair out so that she could donate her hair. She had heard that many people with certain medical conditions lost their hair. She had also learned that she could donate hair so that wigs could be made. The wigs helped boost confidence during such difficult times. After learning this, Macy felt that she could do her part by growing out her hair. Which sentence shows an example of allusion?