Which process most directly converts metamorphic rocks into sedimentary rocks?

• A. Melting
• B. Weathering and erosion
• C. Solid-state metamorphism
• D. Subduction

Answer: (D)

Weathering and erosion break down metamorphic rocks at the surface into sediments, which are then transported, deposited, and eventually lithified into sedimentary rocks. This sequence directly links metamorphic rocks to sedimentary rocks: you first create the loose material, then turn it into rock through lithification. The other options don’t produce sedimentary rocks from metamorphic ones: melting forms magma that becomes igneous rocks, subduction drives deeper metamorphism, and solid-state metamorphism rearranges minerals without creating sediments.