Sound travels in air if
$(a)$. particles of medium travel from one place to another
$(b)$. there is no moisture in the atmosphere
$(c)$. disturbance moves
$(d)$. both particles as well as disturbance travel from one place to another

Sound can travel in a medium if disturbance moves, not the particle.

So, option $(c)$ is correct.

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Updated on: 10-Oct-2022

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