Final answer:
None of the given options correctly identify the densest star, as Polaris is not a white dwarf, and white dwarfs are typically the densest type of stars due to their mass and volume characteristics.
Step-by-step explanation:
To determine the density of a star, we need to consider its mass and volume. The density of a star is defined as its mass divided by its volume. Among the given options:
- Antares is a red supergiant, which implies a very large volume with a relatively low mass compared to its size, so it is not densely packed.
- Spica is a blue giant, meaning it has a high mass and is more compact than a supergiant like Antares, but still not the densest.
- Polaris is incorrectly labeled as a white dwarf in the options, but it is actually a supergiant like Antares. However, the densest type of star among normal stellar life cycles would be a white dwarf, which Polaris is not.
Therefore, none of the options provided are correct. The final answer should refer to a white dwarf if we are discussing the densest type of stars, but Polaris is not a white dwarf.
None of the given options are correct as Polaris is not a white dwarf. White dwarfs are extremely dense because they are the remnants of stars that have exhausted their nuclear fuel and have collapsed into a very small volume while retaining a high mass.