Final answer:
The movement of gas from one area to another is directed from a region of high pressure to a region of low pressure. Based on the principles of gas behavior, the correct answer to the question is option d. high; low.
Step-by-step explanation:
When considering the movement of gas, it follows a basic principle of physics that involves the flow of substances from one area to another. This flow is fundamentally dependent on the pressure difference between two areas. The question you're asking about relates to the behavior of gas and how it migrates from regions of different pressures.
In the context of the natural behavior of gas, it will move from an area of high pressure to an area of low pressure. This occurs because gas molecules naturally spread out to evenly fill the space available to them. When confined, gas molecules packed closely in a high-pressure area will push outwards towards an area where there is less pressure, less molecule density, and more space to occupy, until equilibrium is reached.
Therefore, with this understanding of gas movement, we can determine the answer to the question. When a gas moves from one area to another, it is going from an area where the pressure is greater to an area where the pressure is lesser. Hence, the correct option that completes the statement — 'The V-shaped carrier below depicts a ______ carrier.' — is:
d. high; low