What happens when the temperature of the medium that sound is passing through increases?

particles move faster; sound waves move slower
particles move slower; sound waves move faster
particles move slower; sound waves move slower
particles move faster; sound waves move faster

When the temperature of the medium that sound is passing through increases, the particles move faster. This results in an increase in the speed of sound waves through that medium. Therefore, the correct answer is "particles move faster; sound waves move faster."