a) This is apart of a winning sports photography portfolio because after a football game is won the players pour the gatorade or water on the coach
b) The shutter speed for this photo is around 150
c) This is a key moment because it's a tradition for football players, I don't the photo was exactly planned but I think the camera man was ready because he was expecting this to happen after the win
d)some advanced techniques in this photo are the lighting and the angles of where the photo was taken, like the photo was taken from the side so you can see the coach, players and the fans.