A narrow strip of land that connects two larger landmasses and is bordered by water on both sides is called:

Correct answer: Isthmus. An isthmus is a narrow land bridge between two larger landmasses, with water on either side (for example, the Isthmus of Panama).

• Island: An island is surrounded by water.
• Basin: A basin is a low-lying area that collects water.
• Sanctuary: A sanctuary is a protected area for wildlife.