To determine which box has the greatest density, we first need to understand the relationship between mass, volume, and density.
Density is defined as mass divided by volume (Density = Mass/Volume). Since all boxes are of the same volume, the one with the greatest mass will have the highest density.
From the order of mass given:
- Paper clips (least mass)
- Dice
- Marbles
- Sand (greatest mass)
Since sand has the greatest mass, it will have the greatest density among the options listed.
Therefore, the answer is: B. the box filled with sand.