Which of the following surfaces is least likely to produce an echo Styrofoam, wood, glass or stone?

Answer 1

Styrofoam is least likely to produce an echo compared to wood, glass, and stone. Styrofoam is a highly porous and lightweight material that absorbs sound waves rather than reflecting them, resulting in a decrease in echo. Wood, glass, and stone are denser materials that are more likely to produce echoes due to their ability to reflect sound waves.