Answer:
The correct answer is: schizophrenia.
Step-by-step explanation:
According to the text, there are two main symptoms: very flat affect and confusion by own experiences. Besides, the symptoms seem to have appeared suddenly, without a trigger.
Flat affect refers to the apparent lack of emotion and is a common symptom of schizophrenia. Flat affect can also be present in other psychiatric disorders, like PTSD (post-traumatic stress disorder) but, unlike schizophrenia, PTSD has a specific cause that traumatizes the person and triggers the condition (like fighting in a war or being abused, for example), and Serita's symptoms appeared suddenly.
The state of confusion may also indicate that she loses touch with reality, which is an indicator of psychosis -a spectrum of disorders in which schizophrenia is included-.
Schizophrenia is a severe psychiatric disorder characterized by an abnormal way of thinking, feeling and behaving. People with schizophrenia lose touch with reality and may act, think and talk in a disorganized manner. The condition can present itself in many different forms with many different symptoms, and is thought to be caused by genetic and environmental factors.