is more elastic. absorbs heat faster. has a higher density. reflects sound better.
I gave my students this multiple choice question: The most likely reason sound travels faster in saltwater than in freshwater is that saltwater

Only one answer is correct among these 4 choices:
- is more elastic.
- absorbs heat faster.
- has a higher density.
- reflects sound better.

Could you tell me which one is correct?

has a higher density.