Answer:
C. Noisy
D. Not available at all times
Step-by-step explanation:
It can be used everywhere!
B. is incorrect, because it can be used anywhere that there is wind, actually they need room, so they do well in rural situations.
Windpower is noisy, they make some sounds, especially in strong winds.
If there is no wind, it cannot work at all times.
It definitely doesn't cause pollution, it is eco friendly