What does List<? super T> allow you to do?

The List<? super T> syntax allows you to add objects of type T or its subtypes to the List. This means that you can add objects of type T, as well as any objects that extends or implements T, to the List. The other options are incorrect because B only allows for retrieval, C ensures the List only contains objects of type T, and D would create a List with mixed types, which is not what is allowed with List<? super T>.