During a flight, what is the recommended approach speed to avoid a flight spoiler extension?

The recommended approach speed to avoid a flight spoiler extension is usually calculated by adding a specific margin to the standard approach speed. In this case, the concept of "Approach speed +8" signifies maintaining an approach speed that is 8 knots faster than the standard approach speed for that specific aircraft. This additional speed helps ensure that the aircraft remains within safe operational parameters, reducing the likelihood of inadvertently triggering the flight spoilers, which could compromise the aircraft's lift and control.

Maintaining a speed slightly above the normal approach speed serves to account for variations that may occur during landing, such as turbulence, changes in weight, or deviations in descent profile. By following this guideline, pilots can help ensure a stable approach and landing, minimizing the risk of upsetting the aircraft's balance and enhancing safety during this critical phase of flight.

The other choices either represent speeds that might not provide the required margin or refer to specific operational limits not directly related to this recommendation for approach speeds.