Your lungs can begin to clean themselves
B, A, C because the people are at the tournaments for a reason. The students next because they most likely like sports and last the department store
You can socialize at events to gain experience in that area, you can join social media to gain experience(as long as it is a healthy environment) or you can do things with friends.
It would depend on how bad the tear is. You have tendons in your knee, most notably acl and pcl and if you tear those bad enough, you will not be able to walk
Breakfast would be the correct answer due to it being the best and most important meal of the day!