A. June 22; September 23
B. September 23; December 22
C. March 21; September 23
D. June 22; December 22
✅ The correct answer is option C.
At the North Pole the sun will rise above the horizon on March 21and set below the horizon on September 23.
At the North Pole the sun will rise above the horizon on March 21and set below the horizon on September 23.