Question

which blow from west to east, following the boundary between hot and cold air?
trade winds
sea breezes
jet stream
polar easterlies

Explanation:

• Trade winds blow east to west in tropical regions.
• Sea breezes blow from sea to land locally, not west to east along hot/cold air boundaries.
• Jet streams are fast-flowing west-to-east air currents that form along the boundaries (polar front) between hot and cold air masses.
• Polar easterlies blow east to west near the poles.

Answer:

C. jet stream