The correct answer is: B. Baseball Court
A baseball court is a field where baseball is played. It is a rectangular field with a diamond-shaped infield in the center. The infield is surrounded by a fence or wall. The baseball court is also called a baseball diamond.
A gymnastic track is a long, narrow strip of ground where gymnasts perform their routines. It is made of wood or mats and is surrounded by a safety rail. The gymnastic track is also called a balance beam.
A golf course is a large area of land with a number of holes, each with a tee box, fairway, green, and hole. The goal of golf is to hit a ball into each hole in as few strokes as possible. The golf course is also called a golf links.
A wrestling arena is a large, indoor area where wrestling matches are held. It is usually surrounded by a fence or wall. The wrestling arena is also called a wrestling ring.
The incorrect pair is baseball court and sport ground. A baseball court is a field where baseball is played, not a sport ground. A sport ground is a general term for any area where sports are played.