To determine which area has equal chances of receiving a usual, higher than usual, or lower than usual amount of precipitation over the next three months, you would need to refer to the precipitation prediction map and its key.
Typically, on such maps, areas with equal chances are often marked with a specific shading or color indicating neutrality in precipitation forecasts. Without the visual reference of the map and its key that you're referring to, I can't provide a definitive answer. However, check the areas marked as having "equal chances" or similar wording on the map.
If you have access to the map and can identify the specific key or legend, look for the area matching that indication.
If you share more details or characteristics from the map, I can help you identify the correct answer!