Are normal braking and nosewheel steering available in flight?

Normal braking and nosewheel steering are indeed not available during flight, which is why this answer is correct. The aircraft's braking systems and steering functionalities are designed primarily for ground operations, such as taxiing and landing. Once the aircraft is airborne, the braking systems are disabled to prevent any unintended application of brakes that could lead to loss of control or aerodynamic issues. Steering is also no longer applicable during flight since the aircraft is not in contact with the ground.

During takeoff and in-flight phases, aircraft control is managed through a different set of systems, primarily involving the ailerons, elevators, and rudder for maintaining control and direction. Thus, options suggesting that these functions are available either at all times or during specific phases like landing or taxiing are not aligned with the operational capabilities of the aircraft while in the air.