The answer is C because they show territory gained through the years

6/6 is considered as 1 [ full fraction / whole number]
so that leaves us with 1/6
So, it's 1 1/6
Answer:
As you maintain height, the amount of air above you reduces, lowering the pressure. When the pressure drops, the air molecules spread out more (air expands) and the temperature decreases
Explanation:
Not sure if its long enough.
The term is upwelling that is the answer to your question.