which high - altitude wind system varies in speed based on its distance from the equator and plays a…

which high - altitude wind system varies in speed based on its distance from the equator and plays a significant role in directing air masses across the globe?\npolar winds\njet streams\ncurrents at the equator\nthermal currents
Answer
Brief Explanations:
Jet streams are high - altitude wind systems. Their speed varies with distance from the equator and they are important in directing air masses globally. Polar winds are not the main high - altitude system with such speed variation. Currents at the equator are not high - altitude wind systems. Thermal currents are not high - altitude wind systems in the context of this question.
Answer:
B. jet streams