Final answer:
The order of the speed of sound is solid, liquid, and gases.
Step-by-step explanation:
The order of the speed of sound from the fastest to the slowest is solid, liquid, and gases. In solids, sound travels the fastest because the particles are closely packed together and can transmit vibrations quickly. In liquids, sound travels slower than in solids because the particles are less densely packed. In gases, sound travels the slowest because the particles are much further apart, leading to a longer path for the sound waves to travel.
Learn more about Properties of sound waves in different states of matter