According to the Indirection principle of the GRASP approach to object-oriented design, how can you decouple multiple objects to better support reuse?

Options:

1. Create a child class that can be substituted for a parent class
2. Create an intermediary class to act as a middleman between objects
3. Create a superclass that’s of a different type to its subclasses

4. Create a fake class to handle operations that don’t belong with other objects