Question

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.

Explanation:

Computers in weather forecasting compile data from multiple instruments (e.g., satellites, weather stations). They process this data using complex models. Collecting data (like temperature/pressure) is done by instruments, not computers themselves. They don't eliminate meteorologists (humans analyze results). Transmitting data from space is done by satellites, not computers in the sense of the question.

Answer:

They compile data from multiple instruments.