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The most recommended approach to limit the attributes of a class is to use encapsulation by making the attributes private and providing access to them through getter and setter methods. This approach allows for controlled access to the attributes and enforces data integrity by restricting direct modification of the attributes. Additionally, it allows for easier maintenance and modifications as changes can be made to the internally managed attributes without affecting the external code that uses the getter and setter methods. Overall, encapsulation provides a more secure and maintainable design for classes.