Final answer:
Edwards Deming's 'A system of Profound Knowledge' includes appreciation for a system, psychology, knowledge of the theory of variation, and quality equals productivity.
Step-by-step explanation:
Edwards Deming, an American quality expert, developed a management philosophy called 'A system of Profound Knowledge'.
Deming's profound knowledge consists of four ideas: appreciation for a system, psychology, some knowledge of the theory of variation, and quality equals productivity.
Therefore, the correct option is (e) All of the above are correct.