Above Sea Level is represented by which abbreviation?

The abbreviation that represents "Above Sea Level" is ASL, which stands for "Above Sea Level." This term is commonly used in aviation and geographical contexts to indicate the height of an object, altitude, or elevation relative to the average level of the sea.

Understanding this abbreviation is crucial for pilots, including those operating unmanned aircraft, as altitude is a significant factor that affects flight safety, navigation, and regulatory compliance. The use of ASL allows for clear communication regarding altitudes and ensures that pilots adjust flight paths appropriately, avoiding obstacles or other aircraft.

The other options do not correspond to standard aviation terminology used to denote above sea level. Thus, ASL is the correct choice for indicating elevation relative to sea level.