The correct statement about the relationship between the speed of sound and the density of a medium is:
"Sound waves travel faster in denser mediums."
However, it is important to clarify that this depends on whether we are considering gases or solids and liquids. In gases, the speed of sound generally decreases with increasing density (at constant temperature), while in solids and liquids, the speed of sound typically increases with density. Therefore, if the question is specifically regarding solids or liquids, then the statement about faster sound speed in denser mediums holds true.