Spoilers 1 to 5 operate as _________ and are normally armed for automatic deployment during an RTO or during landings.

The correct choice identifies spoilers 1 to 5 as ground spoilers, which play a critical role in the aerodynamic performance of the aircraft during landing and rejected takeoffs (RTO). Ground spoilers are designed to enhance the aircraft's braking capability by disrupting the airflow over the wings, thus reducing lift and increasing drag once the aircraft is on the ground.

When the aircraft's wheels touch down, the ground spoilers immediately deploy to ensure that the maximum weight of the aircraft is applied to the wheels, providing optimal braking effectiveness. This automatic deployment is a vital safety feature that reduces the likelihood of runway overruns and improves the aircraft's deceleration.

While other options like drag devices might sound similar, ground spoilers specifically refer to those that reduce lift and increase drag upon landing, differentiating them from other devices that may not function in the same way under ground conditions. Understanding the specific naming and operational functions of these systems is crucial for effective cockpit management and safety protocols.