Concept:An emergent coastline is formed when land rises or sea level falls, exposing former sea-bed areas.
Explanation:Emergence usually results from post-glacial adjustment or tectonic uplift.
As the sea retreats, old shoreline features become visible above the present sea level.
Examples include raised beaches, fossil cliffs, and raised wave-cut platforms.
A raised beach is an abandoned shoreline now lying above the current water level.
Rias, dalmatian coasts, and estuarian coasts are features of submergence, not emergence.
Answer:A. A raised beach