Answer:
I) George is correct
Reason: Sound waves, an example of mechanical wave is only longitudinal NOT tranverse
Step-by-step explanation:
The difference is that the direction of a tranverse wave is perpendicular to the direction of vibration unlike the direction of a longitudinal wave that is same as the direction of the vibration.
Also examples of mechanical waves are water waves (tranverse) and sound waves (longitudinal). Thus GEORGE IS CORRECT having stated that "sound waves were longitudinal and not transverse" unlike sally who made a non-specific statement