Why is the equator region the hottest part of earths surface

A The rays of the sun hit the equator region at an angle
B The sun shines directly on the equator region
C The equator region has the widest diameter
D The equator region is closed to the sun

B The sun shines directly on the equator region

The equator region receives more direct sunlight throughout the year compared to other parts of the Earth, resulting in higher temperatures.