Why is the equator region the hottest part of Earth’s surface?

Question

The equator region is closest to the sun.
The sun shines directly on the equator region.
The equator region has the widest diameter.
The rays of the sun hit the equator region at an angle.

Answer 1

The equator region is the hottest part of Earth's surface because it receives the most direct sunlight throughout the year. Due to the Earth's tilt on its axis, the equator region receives sunlight most directly, leading to higher temperatures compared to other regions on Earth. Additionally, the sun's rays hit the equator region at a nearly perpendicular angle, allowing for maximum heating of the surface.