Select the option that can be used as a one-word substitute for the given group of words.

A small island

Islet

The option that can be used as a one-word substitute for "a small island" is islet.

• Islet is a small island.
• Lagoon is a shallow body of water separated from the sea by a barrier island or reef.
• Closet is a small, enclosed room for storing clothes.
• Isthmus is a narrow strip of land connecting two larger landmasses.