What is the minimum airspeed required for a safe stall in landing configuration?

The minimum airspeed required for a safe stall in landing configuration is 78 knots. This speed is crucial because it represents the threshold at which the aircraft can maintain controlled flight while maneuvering during landing. Below this speed, the risk of entering a stall increases significantly, especially in configurations where flaps are extended and the aircraft’s angle of attack may be higher. Operating at or above this airspeed ensures that the pilot has a sufficient margin to recover from a stall should the situation arise, providing greater safety during the critical phases of flight such as approach and landing.

While other speeds listed in the options are higher than 78 knots, they do not represent the minimum safe stall speed, thus making 78 knots the correct benchmark for safety in this context.