Which of the Following Was a Contribution of Freudian Developmental

Multiple Choice

Which of the following was a contribution of Freudian developmental theory?

A) Freud was one of the first to propose that development proceeds through a series of stages.
B) Freud believed that development varied from individual to individual due to learning and socialization.
C) Freud emphasized that the key to a healthy personality was fixation.
D) Because of its objective, scientific basis, Freud's theory can be used to predict future behavior.