Answer:
The true statement is that sound travels through solids easier than liquids
Step-by-step explanation:
The first statement is wrong as sound travels faster within a denser medium
The third statement is wrong as sound travels faster within a denser medium
The fourth statement is wrong as solids are denser than liquids. That is why when you put your ear on the track of a train (DON'T TRY IT) the sound reaches faster to your ears than if you hear something underwater