It would be B. The Alps. The Alps one of the only mountain ranges in the world tall enough to be classified as "Highland climate," and certainly the only one big enough out of the list mentioned to be classified that way.
1-choose any two points on the line.
2-draw a right-angled triangle with the line as hypotenuse.
3-use the scale on each axis to find the triangle's: vertical length.horizontal length.
4-work out the vertical length ÷ horizontal length.
5-the result is the gradient of the line.
Answer:
Density Difference us the most responsible formation of convention current
