Why does day begin to recall his trial test

After the sentencing, Commander Jameson and June bring Day to the roof of Batalla Hall, where he is chained to a cement stand to bake in the sun for two days. Jameson puts June in charge of bringing Day his small ration of food and water. As Day lies in the sun, all he can think about is rescuing John and Eden. He thinks back to his Trial. As part of the test, children have to answer ideological questions about the Republic. Day did his best to answer well, but Chian, his examiner, corrected him several times.