The adrenal glands should be the answer.
Hope this helps!
Answer;
The above statement is false.
Explanation;
Physical fitness can be defined in two categories; health related and motor related. The components of physical fitness includes; Cardiorespiratory endurance, Muscular strength, Muscular endurance, Body composition, and Flexibility.
I’m not sure if this exactly answers your question, but some eyebrows are raised at his dilemmas (morality tests) because the only people tested were 10-16 year old boys that had never been in the situations that were presented to them. Overall his dilemmas could be a reason why people question his theories. Other than this reason I am not aware of another reason why people would question his stages of moral development.