The three correct answers that describe the difference between solar wind and a geomagnetic storm are:
- Solar wind sometimes results in geomagnetic storms; geomagnetic storms do not cause solar wind.
- Geomagnetic storms are associated with CMEs; solar wind is associated with the constant activity in the sun.
- Geomagnetic storms occur only occasionally; solar wind is constant.
These statements correctly differentiate the characteristics and relationship between solar wind and geomagnetic storms.