principles of structuralism to examine conscious experience known as what? I read all my notes & text, & cant find it. choices are behaviorism, client-centered therapy, introspection, and psycho-analysis if you know, please explain so I can retain it.

Introspection. Trying to make sense of our own conscious experiences as they occur, which is introspection.

Not behaviorism because they did not think we had actual conscious experiences.

Client centered therapy and psycho-analysis have nothing to do with this  refuted school of psychology.