In which position must the hydraulic pump 3B switch be for it to be powered when the ADG deploys?

The correct answer highlights that the hydraulic pump 3B switch does not require a specific position to be powered when the Alternate Droop (ADG) deploys. In this scenario, the ADG is responsible for supplying power to the hydraulic system in the event of an engine failure or electrical system loss. When the ADG is deployed, it automatically engages the hydraulic systems, allowing the aircraft to maintain essential hydraulic functions even if the conventional power sources are compromised.

This functionality ensures that the aircraft can operate crucial flight controls and systems for a safe descent and landing. Therefore, the pump switch being in "any position" means that it is designed to operate under these specific conditions without needing manual intervention to switch it to "On," which is generally required for normal operations.