Concept:The summer solstice is the day when a hemisphere tilts most directly toward the Sun, resulting in the longest daylight hours of the year.
Explanation:Earth's axis is tilted at
23.5∘, which causes the Sun's rays to fall unevenly on the two hemispheres.
During its annual revolution, either the Northern or the Southern Hemisphere leans toward the Sun.
When the Southern Hemisphere leans toward the Sun, it receives more direct and intense sunlight.
This creates summer conditions in the Southern Hemisphere.
On this date, the Sun is vertically overhead at the Tropic of Capricorn, which lies at
23.5∘ south latitude.
This alignment occurs around December 21–22 every year.
Therefore, the summer solstice in the Southern Hemisphere falls on December 22.
On this day, the Southern Hemisphere experiences its longest day and shortest night.
Meanwhile, the Northern Hemisphere experiences the winter solstice with its shortest day.
This is the opposite of June 21, when the Northern Hemisphere has its summer solstice.
Thus, among the given options, December 22 is the correct date.
Answer:D. 22 December