Final answer:
Marian's behavior could indicate Obsessive-Compulsive Disorder (OCD), which is different from Bipolar Disorder, Borderline Personality Disorder, and Generalized Anxiety Disorder due to its specific symptoms of compulsions and obsessions.
Step-by-step explanation:
Marian's behavior of tearing down wallpaper because it doesn't have a perfect match in the pattern suggests a preoccupation with symmetry and order, which may point to a condition like Obsessive-Compulsive Disorder (OCD). OCD is characterized by persistent, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions) that the person feels driven to perform in response to an obsession or according to rules that must be applied rigidly. This behavior differs from patterns seen in Bipolar Disorder, which entails periods of depression and mania, Borderline Personality Disorder (BPD), which is characterized by difficulties in regulating emotion, and Generalized Anxiety Disorder (GAD), which includes persistent and excessive worry about a number of different things.