Description:

The correct answer is:

✅ Air mass

Why?

An air mass is a vast volume of air with uniform temperature and humidity across hundreds of miles. It forms when air lingers over a region (e.g., ocean, desert) and adopts its traits.

Types of Air Masses:

Maritime Tropical (mT): Warm/humid (e.g., Gulf of Mexico).

Continental Polar (cP): Cold/dry (e.g., Canada in winter).

Arctic (A): Frigid/dry (e.g., Siberia).

Why Not the Others?

❌ Troposphere: The lowest atmospheric layer (where weather occurs).

❌ Front: The boundary between two air masses.

Fun Fact: Air masses can be 1,000+ miles wide—imagine a "continent" of air! 🌎💨

Bonus: The 1930s Dust Bowl was worsened by a stuck cP air mass. 🌾💨