When is maximum power required for takeoff rather than DRT?

The correct choice highlights that maximum power is required for takeoff when mandated by the Mission Computer data. The Mission Computer takes into consideration various factors such as aircraft weight, environmental conditions, runway length, and performance capabilities. When the data indicates that maximum power is necessary, it ensures the aircraft can achieve the required thrust to safely take off.

This guidance is crucial because it allows pilots to make informed decisions based on the specific mission parameters and conditions. Following the Mission Computer's recommendations ensures the aircraft operates within its optimal performance envelope, taking into account the factors that may necessitate maximum power for a successful and safe takeoff.