Question

4 astronomers can predict variations in the length and strength of solar flares by ____. graphing the daily changes researching the magnitude of the sun using new instruments communicating with their peers skip 3/47 complete

Explanation:

Graphing daily changes can help identify patterns and trends in solar - flare activity, which is useful for prediction. Researching the magnitude of the sun doesn't directly predict solar - flare variations. New instruments may aid in observation but not necessarily prediction. Communicating with peers is more for sharing knowledge rather than prediction.

Answer:

graphing the daily changes