ANSWER.

• Molecules at higher temperatures have more energy and can vibrate faster and allow sound waves to travel more quickly. ... This is faster than 331 meters per second, which is the speed of sound in air at freezing temperatures. The speed of sound is also affected by other factors such as humidity and air pressure.
• The speed of sound in a particular medium depends on temperature and pressure of that medium. The speed of sound decreases when it passes from solid to gaseous state of a given medium. In any medium, if the temperature increases, the speed of sound also increases and vice versa.