When defining recursive valued methods you should:

A) Ensure there is no infinite recursion.
B) Ensure each stopping case returns the correct value for that case.
C) Ensure that the final value returned by the method is the correct value.
D) All of the above

When defining recursive valued methods, it is important to ensure that there is no infinite recursion to prevent the program from crashing. Additionally, each stopping case must return the correct value for that particular case, otherwise, the output will not be correct. Finally, it is important to ensure that the final value returned by the method is correct. Therefore, all of the options listed above are essential for defining recursive valued methods.