Which would scientists predict might happen fue to solar flares?

A. high frequency radio waves used for radio communication will be blocked.
B. electrical systems in satellites will go offline
C. radio navigation systems and global positioning systems will be inaccurate
D. power grid operations will go offline

All of the options (A, B, C, and D) are potential consequences of solar flares.

Scientists predict that all of the given options are potential consequences of solar flares. Therefore, the correct answer is:

A. High frequency radio waves used for radio communication will be blocked.
B. Electrical systems in satellites will go offline.
C. Radio navigation systems and global positioning systems will be inaccurate.
D. Power grid operations will go offline.