Final answer:
The present stage of the Mediterranean Sea in the supercontinent cycle is that it is currently part of a passive margin.
Step-by-step explanation:
The present stage of the Mediterranean Sea in the supercontinent cycle is that it is currently part of a passive margin. A passive margin is an area where there is no tectonic activity or significant deformation of the crust. Instead, it is characterized by sediment deposition and the formation of shallow marine carbonates.