Where does an element take it's density from

The density of an element is defined as the mass of that element divided by the volume, that is, density = mass/volume. Thus, an element takes its density from the ratio of its mass to its volume. Density is a measure of the amount of matter in a substance and it can be used to identify elements and materials. Each element has its specific and unique density.

It's a

The question is incomplete. complete question is attached belowanswer: correct answer is option b  i.e.  solid particles  reason: filter paper has small pores, through which smaller particles can pass through. however, solid particles  have relatively larger size. hence, they are least likely to pass through.