Correct Answer:
B. High
The correct answer is High because colder temperatures increase air density, causing gas molecules to pack closely together and sink toward the Earth's surface.
- Step 1 (Molecular Density): When air cools down, the gas molecules lose kinetic energy, move slower, and contract. This tight packing increases the overall density and weight of the air mass.
- Step 2 (Pressure Generation): Because dense, cold air is heavy, it naturally sinks toward the ground. This downward gravitational force exerts greater weight against the Earth's surface, creating a high-pressure zone.
- Incorrect Options:
- Low is incorrect because low atmospheric pressure zones are created by warm temperatures, which expand air molecules and cause them to rise rapidly.
- Normal is incorrect because pressure is always in a state of dynamic change based directly on thermal variations, rather than remaining static.
- None of these is incorrect because option 2 is the exact scientific rule of thermodynamics.