Question

Density is a measure of (4 points)

Answer 1

Density is a measure of mass divided by volume.
density is mass of the substance for a unit volume
$density (kg m^{-3} )= \frac{mass (kg)}{volume( m^{3}) }$ 
Density is also referred to as ρ.
A large mass spread over a small volume is said to have a high density. Some substances could have a large mass spread over a very large volume, those are said to have a small density.

Answer 2

Density is a measure of mass divided by volume