Please help Your parents are having a discussion in the other room about what reward to give you for getting all A's on your latest report card. You can't hear them, but then you remember something from your Physical Science class. You put a glass to the wall and your ear to the other end. Now you can hear them. The glass helps you hear your parents by:

A.) focusing the wave energy into your ear.

B.) Conducting sound waves better than air.

C.) Interfering with unwanted sound waves.

D.) Reflecting sound waves better than the wall.