Which of the following statements gives the main reason why the wintertime mP air masses are less common along the North American Atlantic coast than along the Pacific coast?

Question

Quizplus · Accepted Answer

The prevailing westerly winds aloft play a significant role in the distribution of air masses. Since these winds generally move from west to east across the continent, they carry maritime Polar (mP) air masses onto the Pacific coast more frequently than onto the Atlantic coast, where such air masses are less common due to the direction of these prevailing winds.

Which of the Following Statements Gives the Main Reason Why