Which coastal zone lies between the high and low tide marks and is frequently sculpted by wave action?

• A. Foreshore
• B. Estuary
• C. Fjord
• D. Fringing Reef

Answer: (A)

The main concept is identifying the coastal zone that sits between the highest reach of the tide and the lowest, and which is constantly reshaped by waves. That zone is the foreshore—the beach area between high and low tide marks. Waves move sediment up onto the shore (swash) and pull it back (backwash), sculpting the surface, creating features like smooth berms and ripple marks, and continually changing the shoreline.

The other options don’t fit this specific description. An estuary is where a river meets the sea, with mixing of fresh and saltwater and a different landscape focus, not defined by being between tide marks. A fjord is a glacially carved valley flooded by seawater, not a coastal zone sculpted by wave action within tide ranges. A fringing reef is a coral reef body along the shore, not the zone between high and low tide marks.