The most likely explanation for the results is:
Naveed’s object had greater kinetic energy.
This is because kinetic energy is related to both mass and speed. Since Naveed’s object created a deeper hole in the sand, it suggests that it had greater energy upon impact, which could have resulted from either a greater mass or a faster speed. Given the data provided, and considering that both objects were dropped from the same height (1.5 meters), it implies that Naveed’s object likely either had greater mass or a greater kinetic energy leading to the larger depth.