Final answer:
A fixed/integral rotor is a one-piece rotor that is manufactured and attached directly to the hub, enhancing rigidity and providing a consistent braking feel.
Step-by-step explanation:
A fixed/integral rotor is defined as a) A one-piece rotor attached to the hub. This means that the rotor, which is the disc-shaped component to which brake pads are applied to create the friction needed to slow down or stop the vehicle, is manufactured as a single unit along with the hub. The hub is the central part of the wheel that is mounted to the suspension and upon which the wheel rotates. In contrast to a two-piece rotor design where the rotor can be separated from the hub, the fixed/integral rotor offers increased rigidity and generally provides a more consistent feel under braking conditions. However, this single-piece design may not be as effective at dissipating heat compared to rotors with integrated cooling fins.