Answer:
Katie is most likely fixated at the an al phase of psychosexual development.
Explanation:
The an al stage is characterized by learning about control, according to Freud. A fixation during this stage can lead to a development of Obsessive-Compulsive Disorder (OCD), for example, in which the individual can be obsessed with organization and needs thing to be an exact way.
In this case we can conclude Katie has a fixation in this particular stage, according to psychodynamic theory.
