I believe because he only wanted to talk about himself and movies.
Explanation:
Rose asks Troy why he will not let Cory play football when Cory is trying to follow in his father's footsteps. Troy explains that when Cory was born, he decided he would not allow Cory to pursue sports in order to spare Cory from a fate like his own.
B.
How could you find something if you don't know what you're looking for?