In a project management application, each 'Project' object needs to have a unique code to identify it among others. Which aspect of the 'Project' object is best suited to store this unique identification code?
An attribute of an object is used to store data specific to that object. In this case, a unique code that identifies a project among others would be stored as an attribute of the 'Project' object. This would allow each 'Project' instance to have its own identification code. On the other hand, methods are used to define actions or behaviors of an object, not to store unique data.