Final answer:
Britain's prevailing winds do come from the south-west, influenced by the mid-latitude westerlies and the North Atlantic Drift, contributing to its temperate maritime climate.
Step-by-step explanation:
The statement that Britain's prevailing winds come from the south-west is True. The prevailing winds in Britain are indeed from the southwest, which is largely due to the country's location within the mid-latitude westerlies and the influence of the North Atlantic Drift, a continuation of the Gulf Stream.
These south-west winds are responsible for bringing mild and moist air to Britain, contributing to the temperate maritime climate that the country experiences. This is often referred to as the Atlantic maritime climate. The climate is also characterized by frequent changes and variability but is generally wet with moderate temperatures.