Answer: Option (D) is the correct answer.
Explanation:
In a hot source, molecules will have more kinetic energy. As a result, they tend to move randomly and at a rapid rate from their initial position.
So, when a wave travels through hot source then vibrations caused by it will also move at a faster rate due to high kinetic energy in the molecules of the source.
Whereas in ice or cold source molecules have very less kinetic energy. As a result, these molecules will be held much more closer to each other.
So, when a wave travels through it then it will find difficulty to pass through the molecules as they are held closer to each other due to which there is very less or no vacant space for the wave to pass on from one end to another.
At room temperature, a wave will travel less fast as compared to wave in a hot source.
Thus, we can conclude that in hot source of water would a wave travel the fastest.
