Question: In the Northern Hemisphere, June 21st has more hours of sunlight than any other day. However, June 21st has the fewest hours of sunlight in the Southern Hemisphere. Which best explains why the Northern Hemisphere receives more daylight than the Southern Hemisphere on the same day?

  Options: 
 A. Earth rotates on its axis
 B. Earth is tilted on its axis
 C. The Sun moves closer to the Northern Hemisphere
 D. The Sun releases more energy to the Northern Hemisphere
Answer: B