Because Mia Hamm has been a role model for girls since she established herself as one of the greatest female athletes of all time.
The author's main purpose for including this
description of Myra and her brother is to emphasize the
children’s isolation from the others. The correct answer between
all the choices given is the third choice. I am hoping that this answer has
satisfied your query about and it will be able to help you, and if you’d like,
feel free to ask another question.