The correct answer is D) The Southern Hemisphere is having winter. At the summer solstice in the Northern Hemisphere, the North Pole is tilted toward the Sun, resulting in the longest day of the year for the Northern Hemisphere. Conversely, the South Pole is tilted away from the Sun, causing the Southern Hemisphere to experience their shortest day and the beginning of winter. The other options are incorrect because: A) The Sun does not shine equally on both hemispheres during the summer solstice; B) The north polar regions are in continuous daylight, not darkness; and C) The Northern Hemisphere is experiencing long days and short nights, not the opposite.