Question

if two objects have identical volumes but different masses, then the object with a lower mass

answer options:
select one of four
will float.
will have lower density.
will sink.
will have higher density.

Explanation:

Density is defined as mass divided by volume ($
ho = \frac{m}{V}$). For two objects with the same volume ($V$ is constant), if one has a lower mass ($m$), using the density formula, a smaller numerator with the same denominator means a lower density. Floating or sinking depends on the density relative to the fluid, not just mass/volume of the object alone, so we can't conclude float/sink from just mass difference here. So the object with lower mass has lower density.

Answer:

will have lower density.