Final answer:
Lenticular clouds (B) are the cloud formations that indicate high winds and can produce strong downslope winds if they reach the surface.
Step-by-step explanation:
Lenticular clouds (B) are the cloud formations that indicate high winds and can produce strong downslope winds if they reach the surface. These clouds are very light and have a sail-like shape. They are typically found high in the atmosphere. Other cloud types mentioned in the options do not necessarily indicate high winds or produce strong downslope winds.