To revise the model of the rock cycle effectively, the following adjustments should be made based on accurate geological processes:
A. Letter A should represent igneous rock that is extruded from magma.
This is correct if Letter A is intended to represent rocks formed through volcanic activity, meaning it should depict extrusive igneous rock.
D. Letter C should represent metamorphic rock which changes composition under heat and pressure.
This is correct if Letter C is intended to reflect the transformation of existing rocks into metamorphic rock due to heat and pressure.
E. Letter B should represent sedimentary rock that is buried by layers of sand and deposited material.
This is appropriate if Letter B is to depict sedimentary rocks that are formed by the compaction and cementation of sediments.
Responses A, D, and E should be selected for modifications to create an accurate model of the rock cycle.