Scientists might predict that several consequences could occur due to solar flares, including:
- Electrical systems in satellites will fail.
- High-frequency radio waves used for radio communication will be blocked.
- Power grid operations will go offline.
- Radio navigation systems and global positioning systems will be inaccurate.
All of the responses listed are potential effects of solar flares, but if you need to select just one, the most common expectation is that high-frequency radio waves used for radio communication will be blocked.