Which V-speed indicates the stall speed in a specified configuration?

The stall speed in a specified configuration is indicated by VSO. This speed is specifically defined as the stall speed in the landing configuration of an aircraft, which typically includes full flaps and gear down. Understanding VSO is crucial for pilots since it helps them recognize the minimum speed at which the aircraft can be controlled during an approach to landing.

In practical terms, VSO is used during training and operational settings to ensure that pilots are aware of the stall margin when maneuvering in the landing phase. Proper knowledge of this speed aids in maintaining safe operational practices, particularly when approaching the threshold of a runway.

While the various other options refer to different types of stall speeds, they lack the specific focus on the configuration that VSO provides. This specificity makes VSO a key parameter for pilots in ensuring safety during critical phases of flight.