Answer:
A. strong winds
Explanation:
A polar vortex is a low-pressure area (a wide expanse of swirling, upper-level, strong cold air) that is parked in polar regions. During winter, the polar vortex at the North Pole expands, sending cold air southward, the cooling temperatures force the vertical layer of air within the vortex to shrink because it gets denser.
Considering this information we can conclude the correct answer is strong winds because polar vortex presents low pressure and higher density.
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