Fill in the blank (collocation with “thunder”) “While walking at three o’clock, I heard the ______ of thunder.” Choose the most natural noun to complete the collocation.

Given data

• Perception verb “heard” + thunder.

Concept/Approach
Common collocations: “the rumble of thunder,” “a clap/peal of thunder.” “Rumble” is the most general here.

Option analysis
rumble — correct and idiomatic.sound — generic; acceptable but less specific than “rumble.”voice — not used with thunder.echo — secondary effect, not the thunder itself.

Final Answer
rumble