What specific reason did Minho give to support his suggestion for Thomas?

Minho says that Thomas behaved in ways that he has never seen before. He was calm and collected, he says. He reminds everyone of how each of them behaved when they first arrived in the Glade: crying every hour, trusting no one and doing no work. Instead, Thomas went out into the Maze to save two boys he barely knew. He saved Alby when Minho had already given up on him. He questioned what Minho did instead of obeying the rules or the established order.