Which of the following is a basic preflight check for the Beechcraft Travel Air BE-95?

The basic preflight check for the Beechcraft Travel Air BE-95 includes a thorough inspection of the control surfaces. This is critical because control surfaces, such as ailerons, elevators, and rudders, directly affect the aircraft's ability to maneuver and respond to pilot inputs. Ensuring that the control surfaces are free of obstruction, properly secured, and functioning as intended is essential for safe flight operations. Any damage or malfunction in the control surfaces could potentially lead to loss of control during flight, making this check particularly vital.

While the other checks, such as inspecting hydraulic systems, electrical connections, and cabin pressure, are also important, they do not directly pertain to the flight controls in the same way that reviewing the condition of control surfaces does. This makes the inspection of control surfaces a fundamental component of the preflight safety protocol.