Answer:
C. The Westerlies bring in warm air.
Step-by-step explanation:
The "Westerlies" are winds that hail from the west and goes to the east. This is also known as "Westerly winds." It gets its warmness from the North Atlantic Drift current that goes over European's west coast area. This allows the places in Western Europe, including northern part of Spain, Germany and France to experience milder climates than the rest of the European places. During summer, the weather is not very hot while during winter, the weather is not very cold. This is because the westerlies become stronger in the season of winter and they become weaker in the season of summer.