Is there a question here? If it’s how he can get in more shape or exercise here my answer. Yoga is a great easy way to exercise but still have the weight-loss benefit. I would say to also consult a doctor there are things they can do.
I’m pretty sure it’s D but check with someone else
Because most people just want the points and don’t do the work and not most of these answers are wrong you are probably just not looking at the right ones this app usually recommend you answers and questions similar to yours if they can’t find yours