The correct answer is:
☐ smaller and more dense
Explanation:
1. Mars has a smaller core compared to Saturn's core.
2. The core of Mars is denser than the core of Saturn. This means that the core of Mars has a higher concentration of mass within a specific volume compared to the core of Saturn.
3. Therefore, Mars has a smaller and more dense core than Saturn's core.
In summary, Mars has a smaller and denser core than Saturn.