What specific aspect of a flight does a glideslope provide information for?

A glideslope provides information specifically about the descent angle of an aircraft during its approach to the runway. It is part of the Instrument Landing System (ILS) and helps pilots maintain the correct vertical path toward the runway. The glideslope indicates the optimal angle at which the aircraft should descend to ensure a safe landing. Pilots use this information to adjust their altitude and descent rate, helping them achieve a stable approach and ensuring they are correctly aligned with the runway. This is crucial for safe landings, especially in low visibility conditions.