1. I would say that this would be a buisness choice that was made by his values. People who care for the homeles do it from the bottom of thier heart. And remember, he did not have to do that job.
2. He is confident on his job outlook. He sees that this career has a great outlook because people will always need someone to clean their teeth, so he comes to the conclusion that being a dentist would be the best choice.
