Which airspace starts at 700 or 1,200 feet AGL and extends up to 17,999 feet MSL?

• A. Starts 700 or 1200 AGL to 17999
• B. Starts at surface to 17,999
• C. Starts 1,500 to 15,000
• D. Starts 2,000 to 18,000

Answer: (A)

In the US, most controlled airspace outside Class A is Class E, which has floors that begin at either the surface, 700 feet AGL, or 1,200 feet AGL and extends upward to but not including 18,000 feet MSL. The given range—starting at 700 or 1,200 feet AGL and going up to 17,999 feet MSL—matches Class E airspace with a 700 AGL or 1,200 AGL base. The other options describe different starting floors (such as from the surface or at other altitudes) that don’t fit this specific floor and top.