Answer: The correct answer is density and floating.
Step-by-step explanation:
Buoyant forces is forces exerted by the fluid on the object immersed in it.
Archimedes discovered the relationship between the density and floating.
Archimedes principle states as: the buoyant force on the object is equal to weight of the fluid is displaces.

= Buoyant force on the object
= Weight of fluid displaced by the object
Density is the measure of mass present in per unit volume of the object.
- If the density of the object is greater than the density of the fluid in which it is immersed then it will get sink. This because more the mass more weight of the fluid it will displace
- If the density of the object is less than the density of the fluid in which it is immersed then it will float. This is because lesser the mass lesser the weight of fluid it will displace.
Hence, the correct answer is density and floating.