False Statement: Weather forecasts for a small region are more accurate than those for a large region.

Explanation:

When it comes to weather forecasting, there are several factors that can affect the accuracy of the predictions. Let's analyze each statement to determine which one is false.

a) Weather forecasts for a small region are more accurate than those for a large region:
This statement is false. Weather forecasts for a small region are actually less accurate than those for a large region. The reason behind this is that weather patterns can vary significantly over a small area, making it more challenging for meteorologists to accurately predict the weather for that specific region. On the other hand, weather forecasts for a large region can rely on a broader range of data, including information from weather stations, satellites, and weather models, which improves the accuracy of the predictions.

b) Weather forecasts are more accurate in Melbourne than in Darwin:
This statement may or may not be true. The accuracy of weather forecasts can vary depending on the location and the availability of weather data. Generally, weather forecasts in larger cities with more advanced weather monitoring systems, such as Melbourne, tend to be more accurate compared to forecasts in smaller cities with limited weather observation resources, such as Darwin. However, it is important to note that advancements in technology have greatly improved the accuracy of weather forecasts in recent years, and the difference in accuracy between different cities may not be significant.

c) Forecasts of temperature are more accurate than forecasts of rainfall:
This statement is false. Forecasts of temperature and rainfall accuracy can vary depending on various factors. Temperature forecasts rely on historical data, computer models, and observational data, making them relatively accurate. However, predicting rainfall is more challenging due to the complex nature of precipitation patterns. Factors such as local topography, wind patterns, and atmospheric conditions can greatly impact rainfall, making it more difficult to accurately predict. Therefore, forecasts of rainfall tend to be less accurate compared to temperature forecasts.

In conclusion, the false statement is option 'A': Weather forecasts for a small region are more accurate than those for a large region. In reality, forecasts for a large region tend to be more accurate due to the availability of more comprehensive weather data and a broader range of factors being taken into account.