Evaluate the two proposed answers. Which are supported? I. Mushroom rock in a desert — the process primarily responsible: Wind abrasion. II. Exfoliation of exposed rock — the process primarily responsible: Physical weathering.
Correct answer: D
I is correct: Mushroom rock in a desert → Wind abrasion. Sand-laden winds erode lower rock surfaces strongly. II is correct: Exfoliation of exposed rock → Physical weathering. Outer rock layers peel away without requiring chemical alteration.