A list of mediums is given below
$(i)$. Wood
$(ii)$. Water
$(iii)$. Air
$(iv)$. Vacuum
In which of these mediums can sound travel?
$(a)$. $(i)$. and $(ii)$
$(b)$. $(i)$., $(ii)$. and $(iii)$
$(c)$. $(iii)$. and $(iv)$
$(d)$. $(ii)$., $(iii)$. and $(iv)$
Sound can travel in any medium wood, water, or air. But sound can't travel in a vacuum as there is no medium in a vacuum.
So, option $(b)$ is correct.
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