The correct answer is option 3: Archipelago. An archipelago refers to a group of interconnected islands. It is typically formed by volcanic or tectonic activity in the ocean. These islands can be close together or spread out over a large area. A famous example of an archipelago is the Philippines, which consists of over 7,000 islands. On the other hand, option 1: Strait is a narrow waterway that connects two larger bodies of water. Option 2: Peninsula refers to a piece of land that is mostly surrounded by water but is connected to the mainland. Option 4: Lagoon refers to a shallow body of water that is separated from the ocean by a barrier.