Tia and Lin had been best friends since kindergarten. Both avid soccer players, the girls decided to try out for the high
school team together. Unfortunately, there was just one
open spot so only one of the girls would be chosen. They
both worked hard, and on tryout day, they did their best.
When the team roster came out, Lin was excited to see
that she had made the team, but sad that Tia had been left
off. Tia was happy for her friend and vowed to work harder
and make the team next year.
Which sentence is the exposition of the passage?