They're conversing outside their church, talking about wheelchair basketball. Wheelchair basketball being a regular thing for Evans, and Church being a religious thing.
You should join the wheelchair basket ball team, It'll be fun!
I'll see if I can.
Chris asking his parents for advice is a thing he was taught/raised by, through child rearing techniques from his parents. They're also standing outside there van that has a safety harness for his chair.
Sure, sounds fun.
Should I join the wheelchair team?
Watching the game could be considered traditional in sports cultural, Chris' dad sitting away from his family could be a traditional thing in the family. Wheelchair basketball is a part of wheelchair culture, even having different chairs made for the sport.
GET THE BALL!
Mr. Evans an elder at Chris' church asks if he can join his wheelchair basket ball team.
Chris asks his parents if he should join the team or not, getting not much of a reaction from his dad.
Chris and his family go to see the Madsion Vs Rosedale game, so he can confirm whether or not he wants to play wheelchair basketball. His dad decides to sit next to the concession stand instead of near him.