The correct answer to this open question is the following.
Although there are no options attached we can say the following.
The space between two walls in front of the Temple of the Bearded Men was used by the Maya for its famous ball game. Yes, that space is the equivalent to a modern field (soccer/football field) where the Mayans played their sacred ball game. Indeed, the official name of that space was the Grand Ball Court.
This Mayan ball game had ritualistic implications. Although it is difficult to understand today, the winners of the Mayan ball game were sacrificed and offered to the Gods, that is why it was a privilege to win.
The Ball court was a huge space. It was 545 feet(length), 245 feet(width).