Final answer:
Wind erosion of mountain rock is a very slow process, with a rate of change around 3.8 cm/year. Therefore, it takes millions of years for wind to significantly alter a mountain's shape.
Step-by-step explanation:
Wind Erosion of Mountains
Wind erosion is a natural geological process that can wear away the solid rock of a mountain, but it typically takes a very long time to make significant changes. According to geological studies, the rate of erosion is quite slow—only about 3.8 cm/year. Given such a gradual rate, it could take hundreds of millions of years for wind to significantly alter the shape of a mountain range. Therefore, the correct statement that describes how long it takes wind to wear away the solid rock of a mountain is A) Millions of years. The involvement of factors like algae and plants could contribute to chemical weathering, which acts in conjunction with physical abrasion by the wind, further shaping the landscape over expansive timeframes.