Final answer:
Jo was likely asked to play basketball by the boys because her skills were recognized due to her experience and better performance in basketball compared to football.
Step-by-step explanation:
The boys likely asked Jo to play basketball with them because she was known to be a better basketball player than a football player. Given her experience with sports and having been coached by her dad, it's safe to infer that her skill level was recognized by the boys, hence their invitation for her to join the game.
From the narrative provided, we can understand the importance of inclusivity in sports, especially at a younger age when skills and interest are developing.
Moreover, Jo's past involvement in football, where her younger brother was allowed to play in an older age group, suggests a precedent for flexibility and acceptance in informal games among children and teenagers.