What will change the velocity of a periodic wave?

Achanging the wavelength of the wave
Bchanging the medium of the wave
Cchanging the frequency of the wave
Dchanging the amplitude of the wave

Verified Answer :

the one that will change the velocity of a periodic wave is : 
B. Changing the medium of the wave
Waves is always determined by the properties of the medium, which means that changing the medium will change the velocity of the wave

hope this helps

the one that will change the velocity of a periodic wave is : 

B. Changing the medium of the wave

Waves is always determined by the properties of the medium, which means that changing the medium will change the velocity of the wave