What causes wind to deflect toward left in the Southern hemisphere?

1. The question asks what causes wind to deflect toward left in the Southern hemisphere. 2. The deflection of moving objects (like air masses, i.e., wind) from a straight path when viewed from a rotating frame of reference (like the Earth) is known as the Coriolis effect. 3. This effect is a direct consequence of the rotation of the earth. 4. Due to the Earth's rotation, winds are deflected to the right in the Northern Hemisphere and to the left in the Southern hemisphere. 5. Temperature (A) and Pressure (D) differences drive the wind initially (creating pressure gradients), but they don't cause the deflection. 6. The Earth's Magnetic field (B) affects charged particles but not large-scale wind patterns in this way. 7. Therefore, the rotation of the earth (Coriolis effect) is the cause of the deflection.