Barrier Islands are:

Barrier Islands are:

• A. A long, narrow island parallel to the coastline, separated from the mainland by a lagoon or bay.
• B. A submerged coral ring around a lagoon.
• C. An underwater ridge near the continental shelf.
• D. An artificial barrier wall.

Answer: (A)

Barrier islands are long, narrow landforms that run parallel to the coastline and are separated from the mainland by a lagoon or bay. They form from sand deposited by waves and longshore currents, building a sandy barrier that protects the shore behind it. This description matches the statement because it describes a landform extending parallel to the coast with a lagoon or bay between it and the mainland. The other features describe different coast and ocean structures: a submerged coral ring around a lagoon is an atoll, not a barrier island; an underwater ridge near the continental shelf is a submarine feature, not a coastal barrier; an artificial barrier wall is man-made, not a natural barrier island.

Barrier islands are long, narrow landforms that run parallel to the coastline and are separated from the mainland by a lagoon or bay. They form from sand deposited by waves and longshore currents, building a sandy barrier that protects the shore behind it. This description matches the statement because it describes a landform extending parallel to the coast with a lagoon or bay between it and the mainland.

The other features describe different coast and ocean structures: a submerged coral ring around a lagoon is an atoll, not a barrier island; an underwater ridge near the continental shelf is a submarine feature, not a coastal barrier; an artificial barrier wall is man-made, not a natural barrier island.