Which of the following is a correct pair of singular and plural?

Torpedo:Torpedoes

The correct pair of singular and plural is:

☀ Torpedo:Torpedoes

Explanation for each option:

☀ Torpedo:Torpedoes: This is correct. The singular form of "Torpedo" is "Torpedo," and the plural form is "Torpedoes."

☀ Stomach:Stomaches: This is incorrect. The correct plural form of "Stomach" is "Stomachs."

☀ Monarch:Monarches: This is incorrect. The correct plural form of "Monarch" is "Monarchs."

☀ Reef:Reef: This is incorrect. The plural form of "Reef" is "Reefs."