Final answer:
A good rule of thumb for engine management during a descent in a high-performance airplane is to reduce the throttle setting to idle while monitoring the airspeed and descent rate.
Step-by-step explanation:
A good rule of thumb for engine management during a descent in a high-performance airplane is to reduce the throttle setting to idle while monitoring the airspeed and descent rate. This allows the airplane to descend smoothly without excessive speed or rate of descent. The pilot can use the elevator control to adjust the pitch attitude and maintain a desired descent rate.