OMG Exam OMG-OCUP2-ADV300 Topic 2 Question 35 Discussion

In Option C, the properties suitable road surface and average speed have been redefined in the subclasses Recumbent Bike and Racing Bike. The use of the {redefines} keyword in UML signifies that the subclass will provide its own specific values for these properties, overriding the general ones provided by the superclass Bicycle. This is the correct way to enforce that each specialization of Bicycle has a unique set of values for these attributes, as redefinition allows for the customization of inherited properties on a per-subclass basis. The use of {redefines} is specified in the UML 2.x Superstructure Specification, which describes how properties inherited from a superclass can be customized by subclasses.