Answer:
I would say D. A Thunderstorm
Explanation:
During a thunderstorm there are pretty high winds that can knock power lines down, lots and lots of rain, lightning that can easily strike down a power line, etc.
A simple rainfall could not hold enough power to block a radar signal
Sunshine does not effect anything see as it includes clear weather.
A tornado would also be another thing to consider though.
Hope this helped!
