4. Which factors have the greatest impact on the direction of global winds? Choose one. A. air speed and the amount of daylight B. rotation of Earth and pressure differences C. length of the day and temperature of the air D. distance from the horse latitudes and size of the sun

The direction of global winds is primarily influenced by the **rotation of the Earth** and **pressure differences** across the planet. Here's a brief explanation of why **Option B** is the correct choice: - **Rotation of Earth**: The Earth's rotation causes the Coriolis effect, which deflects the path of the winds to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This deflection plays a crucial role in determining the prevailing wind patterns around the globe. - **Pressure Differences**: Wind is essentially air moving from areas of high pressure to areas of low pressure. These pressure gradients are created by uneven heating of the Earth's surface, which leads to variations in atmospheric pressure. The greater the pressure difference, the stronger the winds. **Other Options Explained:** - **Option A**: While air speed is related to wind strength, the amount of daylight is more indirectly related and not a primary factor in determining wind direction. - **Option C**: The length of the day affects the overall heating of the Earth but is not as direct a factor in wind direction as rotation and pressure differences. - **Option D**: The distance from the horse latitudes is a result of wind patterns rather than a cause, and the size of the sun remains constant, making this option less relevant. **Correct Answer:** **B. rotation of Earth and pressure differences**