What is a central idea in a novel? Crossover

What do you expect the central idea to be in The Crossover? Why do you feel this way?

The central idea in The Crossover is likely to be about family dynamics, competition, and the power of brotherhood. This is because the novel follows the story of twin brothers who are both competitive basketball players, and explores how their relationship is tested as they navigate the challenges of adolescence and their respective basketball careers. The bond between the brothers and the themes of family and brotherhood are likely to be central to the story, making them key ideas in the novel.