How many edge markers are placed on each side of the MOS threshold and departure end lines?

The correct answer is 10 because the standard procedure for marking the minimum operational strip in the context of MOS threshold and departure end lines specifies that 10 edge markers are placed on each side. This is important for ensuring clear visibility and proper identification of the operational boundaries for pilots and air traffic controllers, which is critical for safe operations. Consistency in the number of markers enhances safety by providing a predictable and easily recognizable visual cue for runway limits. This practice aligns with aviation safety protocols that necessitate clear delineation of operational areas to prevent runway incursions and to guide aircraft during takeoff and landing phases.