What indicates that the correct airspeed is being maintained during a power approach to a short-field landing?

Maintaining the correct airspeed during a power approach to a short-field landing is crucial for ensuring that the aircraft behaves predictably as it nears the ground. When a pilot maintains the correct airspeed, the aircraft will typically exhibit little or no floating during the landing flare. This is because the correct airspeed allows for optimal control of the aircraft's descent rate and ensures that the aircraft is appropriately configured for landing.

When the airspeed is too high, the aircraft may float, making it challenging to precisely touch down at the desired point on the runway. With the correct airspeed, the pilot can manage the descent and flare effectively, leading to a more controlled landing without excessive floating, which can cause delays and difficulties in achieving the intended landing spot.

The other choices, while related to landing dynamics, do not directly indicate that the correct airspeed is being maintained. For instance, the ability to maintain a constant descent or round out smoothly can be influenced by various factors, including wind conditions and landing technique, rather than airspeed alone. Additionally, a steady altimeter reading signifies stable altitude rather than the specifics of airspeed management during the landing phase.