Respuesta :
Summer begins in the Northern Hemisphere on June 20 or 21 when the North Pole is tilted a full 23.5° toward the sun. On this day, the Northern Hemisphere has the most hours of daylight, while the Southern Hemisphere has the least hours of daylight.
Answer:
So you're answer is "When the Northern Hemisphere is closest to the sun" (D)
Explanation:
The north pole is tilted 23.5 degrees toward our Sun and the Northern Hemisphere experiences summer solstice, the longest day of the Northern Hemisphere year. Also I took the Mid-Unit Test.