Analogy — Animal and vocalization: Nightingale : Warble :: Frog : ? Choose the sound typically associated with a frog.

Introduction / Context:
The pair links an animal to its characteristic call. Nightingales warble; frogs croak.

Why Other Options Are Wrong:

• Yelp: Typically dogs/foxes.
• Cackle: Geese/hens.
• Squeak: Mice/rodents.
• None of these: Invalid since “Croak” is correct.

Final Answer:
Croak