The correct answer is B. latitude.
Latitude is the most important factor determining a region’s climate. The Earth’s axis is tilted at an angle of 23.5 degrees, which causes the sun’s rays to hit different parts of the Earth at different angles. The areas that receive more direct sunlight are warmer, while the areas that receive less direct sunlight are cooler.
Longitude is the distance east or west of the Prime Meridian. It does not have a significant effect on climate.
Temperature is a measure of how hot or cold something is. It is not the main factor determining a region’s climate. However, it does play a role in determining the type of climate a region has. For example, areas with high temperatures are more likely to have a tropical climate, while areas with low temperatures are more likely to have a polar climate.
All of the above are not the correct answer.