Correct Option
The correct option is Move southwards.
Explanation
The global distribution of atmospheric pressure is not static. The pressure belts oscillate north and south in response to the apparent movement of the Sun between the Tropic of Cancer and the Tropic of Capricorn. This phenomenon is known as the seasonal migration of pressure belts.
Analysis
- Solar Position: During the winter season in the Northern Hemisphere (specifically around the Winter Solstice in December), the Sun is vertically overhead near the Tropic of Capricorn in the Southern Hemisphere.
- Thermal Response: The zone of maximum insolation and heating shifts to the Southern Hemisphere. Consequently, the Inter-Tropical Convergence Zone (ITCZ), which is a thermal low-pressure belt, shifts southwards.
- Systemic Shift: Following the ITCZ, all other associated pressure belts-including the Subtropical High-Pressure Belts and Subpolar Low-Pressure Belts-shift towards the south.
- Contrast with Summer: Conversely, during the Northern Hemisphere summer (June), the Sun is overhead at the Tropic of Cancer, causing the pressure belts to shift northwards.
Therefore, in the Northern Hemisphere winter, the pressure belts move southwards.
Key Takeaway: Pressure belts follow the apparent path of the Sun: they shift northwards during the Northern Hemisphere summer and southwards during the Northern Hemisphere winter.