Answer:
Option (A)
Step-by-step explanation:
Westerlies are the warm wind blowing in the mid-latitudes from the western direction towards the eastern direction in both the hemisphere. It originates at the 30° latitudes from the high-pressure region and moves towards the region that are located at 60° latitude.
Since Europe is located between the latitude of 30° to 60° in the northern hemisphere, so it experiences the strong westerly winds. As this warm wind comes from the tropical region so they bring warmer air currents often accompanied by rainfall. This wind when reaches the western coastal part of Europa the ice present there gets melted.
so the ports remain ice-free during the winter season.
Thus, the correct answer is option (A).