The most likely explanation for the results is: "Naveed’s object had greater kinetic energy."
Since both students dropped their objects from the same height, the key difference lies in the recorded depths, which indicates that Naveed’s object created a deeper hole in the sand. This suggests that Naveed’s object may have had greater kinetic energy upon impact, which could be due to factors such as mass or shape. The depth of the hole made in the sand is more directly related to the kinetic energy at the moment of impact than to drop speed or width.