The Core of the Sun is the most dense region, with a density of about 150,000 kg/m³. In comparison, the Photosphere and Corona have much lower densities. The Radiation Zone also has a higher density than the Photosphere but is less dense than the Core. ;
The Core is the most dense region of the Sun, with a density of around 150,000 kg/m³. In contrast, the Photosphere and Corona have much lower densities, while the Radiation Zone is less dense than the Core but denser than the Photosphere. Therefore, the answer to the question is the Core.
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