In the standard atmosphere, about how much does the temperature fall for each 1,000 feet of altitude gain (up to 36,000 feet)?

1. 1About 2 °C
2. 2About 0.5 °C
3. 3About 5 °C
4. 4About 10 °C

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 4: Principles of Flight — Atmospheric Pressure, page 90