On the moon, one cannot hear sound, as there is no medium for propagation of sound wave.
The correct statement is :
(a) Sound and light both require medium for propagation
(b) Sound can travel in vacuum, but light can not
(c) Sound needs medium, but light does not need medium for its propagation
(d) Sound and light both can travel in vacuum.
Assertion: Sound waves do not travel through the vacuum.
Reason: Sound waves are mechanical waves that require a medium for their propagation.