Questions: How are computers used in producing weather forecasts? They compile data from multiple instruments. They collect air temperature and air pressure data. They eliminate the need for human meteorologists. They transmit data on developing weather systems from space.

The answer is the first one: they compile data from multiple instruments.

Explanation for each option:

• They compile data from multiple instruments. This is correct. Computers are essential in weather forecasting as they gather and process vast amounts of data from various sources, such as satellites, weather stations, and ocean buoys. This data is then used to create models that predict weather patterns.

• They collect air temperature and air pressure data. This is partially correct but misleading. While computers process and analyze air temperature and pressure data, they do not directly collect it. The data is collected by instruments and sensors, and then fed into computer systems for analysis.

• They eliminate the need for human meteorologists. This is incorrect. Computers assist meteorologists by providing data and models, but human expertise is still crucial for interpreting the data, making forecasts, and communicating them effectively to the public.

• They transmit data on developing weather systems from space. This is partially correct but not the primary role of computers in weather forecasting. Satellites transmit data from space, which is then processed by computers. However, the transmission itself is not a function of the computers used in forecasting.

In summary, computers play a vital role in compiling and processing data from multiple instruments to produce accurate weather forecasts.