The Arabian Plate is primarily a divergent plate. It is moving away from the African Plate along the Red Sea Rift, which is a divergent boundary. This movement is causing the Red Sea to widen over time.
In addition to its divergent boundary with the African Plate, the Arabian Plate also has a convergent boundary with the Eurasian Plate. This convergence is responsible for the formation of the Zagros Mountains in Iran.
In summary, the Arabian Plate exhibits both divergent and convergent boundaries, but its primary movement is divergent, particularly along the Red Sea Rift.