A. A lagoon
B. An inland Sea
C. An island in a river
D. Narrow piece of land connecting larger land areas
Submitted by: Bilal Tahir
An isthmus is a narrow piece of land connecting two larger areas across an expanse of water by which they are otherwise separated. A tombolo is an isthmus that consists of a spit or bar, and a strait is the sea counterpart of an isthmus.
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