The statement "sound travels with the velocity of light" is not physically possible in our universe. As mentioned earlier, the speed of light in a vacuum, denoted by 'c,' is an absolute speed limit, and nothing with mass can travel at or exceed this speed.
Sound, on the other hand, is a mechanical wave that requires a medium (such as air, water, or solids) to travel through. Sound waves propagate by compressing and rarefying the particles of the medium as they travel through it. The speed of sound depends on the properties of the medium; for example, in dry air at room temperature, sound travels at approximately 343 meters per second.
Since sound requires a material medium to propagate, it cannot travel through a vacuum, where there are no particles to compress and propagate the wave. In a vacuum, such as outer space, there is no medium for sound to travel through, so sound waves cannot exist or propagate.
In summary, sound and light are fundamentally different types of waves, and sound cannot travel at the speed of light because it requires a medium, whereas light, being an electromagnetic wave, can travel at the constant speed of light in a vacuum.