An acceleration will require which adjustments for rudder and elevator trim?

In flight, when an aircraft experiences acceleration, it often requires a specific adjustment of both the rudder and elevator trim to maintain straight and level flight. During acceleration, particularly in a propeller-driven aircraft like the T-6B, there is a tendency for the nose of the aircraft to pitch up due to the increase in power and thrust. This is where the elevator trim comes into play. To counteract this natural tendency and maintain level flight, the elevator trim needs to be adjusted downward.

Additionally, as the aircraft accelerates, the airflow over the aircraft can create a yawing tendency that might cause the aircraft to turn to the left, depending on various factors such as engine torque and propeller effects. To counteract this, rudder trim must be adjusted to the left, helping the aircraft maintain a straight heading.

Thus, the correct answer requires a left adjustment of the rudder trim and a downward adjustment of the elevator trim. This combination allows the pilot to manage the effects of acceleration effectively while ensuring optimal control of the aircraft.