Question

Which of the following objects has the greatest density

Answer 1

The density is determined on the steepness of the slope. The greater the density is bases upon the steepest slope. To conclude, I'd say Line A has the steepest slope therefore has the greatest density.

Answer 2

Density is measured in mass per unit of volume, so in this case g/mL. We can see that the three objects have the same volume, but different masses. Line A has the greatest mass, so will have the greatest volume as it has more mass per mL, meaning that there's more of the stuff in one container.