The correct statement is:
(a) Sound and light both require medium for propagation
(b) Sound can travel in vacuum, but light cannot
(c) Sound needs medium, but light does not need medium for its propagation
(d) Sound and light both can travel in vacuum

(c) Sound needs medium, but light does not need medium for it’s propagation

Reason — Sound waves are mechanical waves. So, they require a medium, such as air, water, or solids, to travel through. In contrast, light waves are electromagnetic waves that can propagate through vacuum as well as various mediums. Light does not depend on a material medium for its transmission and can travel through empty space.