Respuesta :
Answer: Option (C) is the correct answer.
Explanation:
In solids, sound travels faster because in solids the molecules are much more closer to each other as compared to liquids and gases.
Hence, distance between molecules is the minimum in solids and sound passes from one molecule to another easily.
Thus, we can conclude that people tend to cup their hands around listeners' ears when whispering to them because solid objects, such as a cupped hand, can direct sound waves into the ear of the listener.