distance between the vibration source and the receiver. type of material through which the sound travels. size of the object making the sound. type of device making the sound.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The speed at which sound waves travel depends on the
Possibilities:
- distance between the vibration source and the receiver.
- type of material through which the sound travels.
- size of the object making the sound.
- type of device making the sound.

type of material through which the sound travels.