Which listed solar event can drive a major geomagnetic storm through an Earth-directed eruption of plasma and magnetic field?

Explanation

Coronal mass ejections can drive major geomagnetic storms when Earth-directed plasma and magnetic fields interact with the magnetosphere. Solar flares are bursts of radiation and may accompany CMEs, but the two phenomena are not interchangeable. Other solar-wind structures can also cause geomagnetic disturbances.