Concept:During an equinox, the Sun is directly overhead at the Equator, causing nearly equal day and night all over the world.
Explanation:An equinox occurs when the Earth’s axis is neither tilted toward nor away from the Sun.
The Sun’s rays then fall vertically on the Equator.
As a result, the circle of illumination passes through the poles.
This divides every latitude into two equal halves — daylight and darkness.
Therefore, all places across the globe experience approximately equal lengths of day and night.
Equinoxes happen twice a year, around March 21 and September 23.
Answer:Option B: All places across the globe experience equal lengths of day and nights.