What happens during a left spin due to gyroscopic precession?

In a left spin, gyroscopic precession causes the aircraft to pitch more upwards while the rotation continues. This is due to the inherent nature of gyroscopic forces acting on the aircraft's spinning motion. As the aircraft spins left, the forces generated by the spinning mass exert an influence, leading to an increase in the pitch angle.

The phenomenon occurs because when you apply a force to change the angle of a spinning object (like the aircraft during a spin), the response is not in the direction of the applied force but rather at a right angle to it. As a result, the aircraft pitches upwards, which can create a situation where the spin may be sustained but at an altered velocity.

In terms of the options, while the spin may be affected by many factors including the aerodynamic forces acting on the aircraft, the correct response captures the primary effect of gyroscopic precession during a left spin. The spin may not necessarily become slower, and the pitch is definitely influenced, emphasizing the gyroscopic effect.