The Correct answer is 40° to 50° South. Important Notes: • The Roaring Forties are extremely powerful westerly winds that blow in the Southern Hemisphere between latitudes 40° and 50°. • These gale-force, west-to-east currents are the result of the combination of three variables: warm air movements, the Earth's rotation, and the near absence of relevant landmasses. • Warm air near the equator rises and tends to move toward the North and South Poles, where temperatures are much lower and less heated by the sun. As it travels south of the equator - and pushed by cooler winds - the wind starts accelerating because it does not encounter obstacles serving as windbreaks. • With the help of the rotation of the Earth, air deflects south and morphs into high winds that circle the South Pole. They are only interrupted by Tasmania, Central and South New Zealand, and South America's Cape Horn. Wellington, the capital of New Zealand, is also known as "Windy Welly" because it is one of the few cities located in these turbulent latitudes.