What does MALSR lighting help facilitate for pilots?

MALSR (Medium Intensity Approach Lighting System with Runway Alignment Indicator Lights) lighting primarily provides visual information for pilots to align their aircraft properly with the runway during the approach phase of landing. This system includes a series of lights that help pilots by indicating the correct flight path in the final stages of the approach.

By guiding pilots with a clear visual reference, MALSR enhances situational awareness and assists in compensating for atmospheric conditions that may affect visibility, such as fog or rain. This visual cue is essential for ensuring that the aircraft is aligned correctly with the runway centerline, making it a crucial component for safe landings.

The other options do not appropriately reflect the primary function of MALSR lighting. It is not limited to enhancing visibility during takeoff or providing groundspeed indications or altitude alerting—factors that are addressed by other aviation instruments or systems. Instead, its primary role lies in aiding pilots with runway alignment, making it integral for approach safety and efficiency.