An isthmus is best described as which of the following?

• A. Narrow strip of land connecting two larger land.
• B. Long, narrow inlet of the sea with steep cliffs on each side.
• C. Narrow waterway connecting two larger bodies of water.
• D. Low plain built up by mud deposited at the mouth of a river.

Answer: (A)

An isthmus is a narrow strip of land that connects two larger landmasses and separates two bodies of water. The option that describes a narrow strip of land connecting two larger lands fits this definition exactly. A fjord describes a long, narrow inlet of the sea with steep cliffs, not a land bridge. A strait or channel is a waterway connecting two bodies of water, not land. A delta is a low plain formed by mud deposits at a river’s mouth. For example, the Isthmus of Panama links North and South America and separates the Pacific Ocean from the Caribbean Sea.