A. Intrusive igneous rock → sedimentary rock: Weathering and erosion break down the intrusive igneous rock into sediment. The sediment is then transported and deposited, undergoing compaction and cementation to form sedimentary rock.
B. Metamorphic rock → sediment: Weathering and erosion break down the metamorphic rock into sediment. The sediment is then transported and deposited.
C. Sediment → sedimentary rock: Compaction and cementation occur, causing the sediment to become compacted and bind together to form sedimentary rock.
D. Sedimentary rock → sediment: Weathering and erosion break down the sedimentary rock into sediment.