Which of the following describes the primary benefit of using Distance Measuring Equipment (DME)?

The primary benefit of using Distance Measuring Equipment (DME) is its capability to provide precise distance information from a VOR (VHF Omnidirectional Range) station. DME operates in conjunction with a VOR, allowing pilots to determine their distance from a specific navigational aid, which is crucial for en route and approach navigation. This distance information assists in situational awareness and allows pilots to maintain appropriate flight paths and manage their navigation with greater accuracy.

Understanding your distance from the VOR is essential for various flight procedures, including holding patterns, approaches, and ensuring clearance from obstacles, particularly in mountainous terrain. This capability is especially valuable in instrument flight rules (IFR) conditions, where visual references may be limited, as it aids in the safe and effective operation of aircraft within controlled airspace. Other options mention benefits like estimating flight time, guiding visual approaches, and tracking distances of other aircraft, but these are not the primary functions of DME. DME's specific focus on providing distance from a VOR station defines its primary benefit in aviation navigation.