Final answer:
The density of the rock sample is 4.05 g/cm³.
Step-by-step explanation:
The density of a rock sample can be determined by dividing its mass by its volume. In this case, the rock sample has a mass of 16.2 g and a volume of 4 cm³. To find the density, we divide the mass by the volume:
Density = Mass / Volume
Plugging in the values, we get:
Density = 16.2 g / 4 cm³ = 4.05 g/cm³
Therefore, the density of the rock sample is 4.05 g/cm³. Therefore, the correct answer is d) 4.05 g/cm³.