The primary method of investigation used by structuralists was:

A) natural observation.
B) dream interpretation.
C) analytic introspection.
D) experimentation.

Natural Observation

A research method in which subjects are observed in their natural environment without any manipulation by the researcher.

Dream Interpretation

The process of assigning meaning to dreams, often seen in psychoanalysis as a way to uncover underlying thoughts and feelings.

Analytic Introspection

A method in psychology where individuals closely analyze their own thoughts and emotions to gain insight.