Answer: A nal fixation
Explanation: According to Sigmund Freud, there are certain stages for sexual (libido) development. The second stage is the a nal stage, where children at that age tend to look at their faeces as their own production and sometimes play with it or things that are sensory similar (clay for example). A person who has a fixation in this stage, cannot tolerate being dirty although it causes him/her an unconscious pleasure so they transform it into the contrary, being extremely neat.