Final answer:
Kate's behavior, where she calls the receptionist incompetent and discounts her understanding due to not being a parent, exhibits disrespect and prejudice.
Step-by-step explanation:
When Kate called the receptionist incompetent and stated that she wouldn't understand because she was not a parent, Kate demonstrated a behavior level associated with disrespect and prejudice. This type of behavior can be considered disrespectful because it involves personal insults and unprofessional conduct. Additionally, it reflects a prejudice as Kate assumes that not being a parent disqualifies the receptionist from having understanding or empathy in a given situation. Hence, this is the demonstration of Kate's behavior.