Final answer:
The mass of water that completely filled the density bottle can be determined using the water displacement method.
Step-by-step explanation:
The mass of water that completely filled the density bottle can be determined using the water displacement method. This involves measuring the change in volume when the density bottle is completely filled with water. The increase in volume represents the volume of the water, which can be converted to mass using the density of water.
The correct answer would depend on the actual measurements taken during the experiment. However, without the specific details, it is not possible to provide an exact answer. The mass of water that completely filled the density bottle could be any of the given options (A) 23.2g, (B) 33.1g, (C) 15.9g, or (D) 16.1g.