PT 8 S4 Q22

Psychologists today recognize childhood as a separate stage of life which ... ...

Which one of the following principles, if established, would provide the strongest backing for the argument?
(A) Whenever current psychological practice conflicts with traditional attitudes toward people, those traditional attitudes should be changed to bring them in line with current psychological practice.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: "Stronger" Questions, Set 3 - Difficult/Uncommon Mix (25Q)