Why is altitude considered an independent factor affecting climate?

Correct answer: Because temperature generally decreases as altitude increases

The direct answer is A: temperature generally decreases as altitude increases. Altitude means height above sea level. As air rises, it expands in the lower-pressure surroundings and cools; therefore high mountain areas are commonly cooler than nearby lowlands, although local conditions can modify the exact temperature. Option A is correct because the usual climatic relationship is higher altitude, lower temperature. Option B is wrong because altitude does not only measure rainfall; it is a measure of height and influences temperature, pressure and other conditions. Option C is wrong because altitude is not a sea wave. Option D is wrong because altitude does affect weather and climate, especially temperature. The reasoning is: higher place → generally cooler air → lower average temperature. This is why elevation is treated as an important climate control. Memory cue: climb higher, temperature usually falls.