What happens when a wind hits a barrier like a mountain.

A It breaks apart and moves in all directions
B It increases its intensity
C It moves downwards with the same strength
D It is pushed upwards and spreads apart

C It moves downwards with the same strength

When wind hits a barrier like a mountain, it is forced to move downwards with the same strength due to the obstruction. This can lead to increased wind speeds and turbulence as the air is funneled through valleys and passes.