Into which manifold does the ground air cart feed?

The ground air cart is designed to supply compressed air to the aircraft during ground operations, particularly for systems that require pneumatic power. In the context of aircraft systems, the right manifold is typically the correct choice because it is the designated manifold that receives the ground air input. This allocation ensures a systematic distribution of air to the aircraft's pneumatic systems, which might include engine start cycles or other ground operations requiring pneumatic pressure.

The other manifolds do not serve the ground air cart in this capacity; the left manifold may be linked to other specific systems, while the center and auxiliary manifolds serve different operational functions within the aircraft but do not receive the ground air directly from the cart. Therefore, understanding the operational configuration of the manifolds provides clarity on why the right manifold is the correct answer in this scenario.