A narrow land link that joins large land masses and separates seas is called

A narrow land link that joins large land masses and separates seas is called
A: Estuary
B: Strait
C: Isthmus
D: None of these

An isthmus is a land bridge that connects two larger land areas while dividing adjacent seas. Examples include the Isthmus of Panama and the Isthmus of Suez. A strait is a narrow sea channel. An estuary is a tidal river mouth. These terms often appear together in map based questions.