Questions: A diagram of Earth's tilt in relation to the sun during winter in the Northern hemisphere is shown. Based on the diagram, choose the best explanation as to why most crops are grown in the Southern Hemisphere during this time. The Southern Hemisphere is further from the sun, therefore it is spring. The Southern Hemisphere is pointed toward the sun, therefore it is summer there. The Southern Hemisphere is perpendicular to the sun, therefore it is spring there. The Southern Hemisphere is closer to the sun, therefore it is summer there.

The answer is the second one: The Southern Hemisphere is pointed toward the sun, therefore it is summer there.

Explanation for each option:

1. The Southern Hemisphere is further from the sun, therefore it is spring.
   This statement is incorrect. The distance from the sun does not determine the season; rather, it is the tilt of the Earth's axis. During the Northern Hemisphere's winter, the Southern Hemisphere is tilted toward the sun, making it summer there, not spring.

2. The Southern Hemisphere is pointed toward the sun, therefore it is summer there.
   This statement is correct. During the Northern Hemisphere's winter, the Southern Hemisphere is tilted toward the sun, receiving more direct sunlight and experiencing summer. This is why most crops are grown in the Southern Hemisphere during this time.

3. The Southern Hemisphere is perpendicular to the sun, therefore it is spring there.
   This statement is incorrect. If the Southern Hemisphere were perpendicular to the sun, it would be experiencing an equinox, which is not the case during the Northern Hemisphere's winter. The Southern Hemisphere is actually tilted toward the sun, making it summer.

4. The Southern Hemisphere is closer to the sun, therefore it is summer there.
   This statement is misleading. The Earth's orbit is slightly elliptical, but the difference in distance from the sun is not significant enough to cause the seasons. The tilt of the Earth's axis is the primary reason for the seasons, and during the Northern Hemisphere's winter, the Southern Hemisphere is tilted toward the sun, making it summer.

In summary, the correct explanation is that the Southern Hemisphere is pointed toward the sun, resulting in summer there.