Answer:
the sun's core is the hottest region
Step-by-step explanation:
The sun's temperature is not uniform across its surface, but rather varies in different regions. The hottest part of the sun is its core, where nuclear fusion reactions release enormous amounts of energy and generate temperatures of around 15 million degrees Celsius (27 million degrees Fahrenheit).
The temperature decreases as you move away from the core towards the sun's surface, which is also known as the photosphere. The temperature of the photosphere is around 5,500 degrees Celsius (9,932 degrees Fahrenheit). However, above the photosphere, in the sun's outer atmosphere or corona, temperatures can reach millions of degrees Celsius despite being farther away from the core.
So, while the sun's core is the hottest region, the temperature in the corona is also extremely high.