Theorists who attempted to update and modify Sigmund Freud's original theory of personality are called a. psychoanalysts. b. Gestaltists. c. neo-Freudians. d. humanists.

The correct option is letter c. neo-Freudians.

Explanation:

The term neo-Freudians refers to psychologists who agreed with several of Sigmund Freud's principles, but who incorporated their own ideas and beliefs to them, adapting those principles. As we know, Freud's tenets were always quite controversial. Even though he attracted a great number of followers, psychologists tended to disagree in part with what Freud believed. Many neo-Freudians did agree, for instance, with the concept of unconscious mind and the importance of early childhood, but adapted or rejected other notions.