The correct answer is A. Polo.
A chukka is a period of play in polo. Each chukka lasts for seven minutes and there are four chukkas in a game. The game is played on a large field with two teams of four players each. The object of the game is to score goals by hitting a ball through the opposing team’s goal posts.
Horse racing is a sport in which horses race against each other over a set course. The course can be either flat or over jumps. The winner of the race is the horse that crosses the finish line first.
Wrestling is a combat sport in which two people struggle against each other to gain an advantage over the other. The goal of wrestling is to pin the opponent’s shoulders to the ground for a certain amount of time.
Rifle shooting is a sport in which participants shoot at targets with rifles. The goal of rifle shooting is to hit the target as many times as possible.