The most current thinking on the cause of schizophrenia is that it is:

Choice A reason: Auditory hallucinations involve hearing voices or sounds that are not present, which does not match Audrey's experience of visual perceptions.

Choice B reason: Free-floating anxiety is a general feeling of unease that is not tied to a specific situation, whereas Audrey's anxiety is triggered by a specific scenario reminiscent of past trauma.

Choice C reason: Flashbacks are vivid, often distressing, memories of past traumatic events that feel as though they are happening in the present. Audrey's experience is indicative of flashbacks related to her military service.

Choice D reason: Delusions of grandeur involve beliefs of inflated worth, power, or identity, which is not described in Audrey's situation.

Choice A reason: Catatonia is characterized by symptoms such as extreme muscle rigidity, repetitive speech, and resistance to movement, which align with Lisa's presentation. It is often associated with other mental health conditions but can also be a standalone diagnosis.

Choice B reason: Disorganized schizophrenia is marked by disorganized thinking and behavior, inappropriate emotional responses, and erratic actions. While Lisa's symptoms could suggest a psychotic disorder, they do not specifically indicate disorganized schizophrenia.

Choice C reason: Schizotypal disorder involves eccentric behavior, odd beliefs, and difficulty forming close relationships. Lisa's symptoms do not align with the core characteristics of schizotypal disorder.

Choice D reason: Brief psychotic disorder is a short-term condition that includes delusions, hallucinations, and disorganized speech. Lisa's symptoms could be part of a brief psychotic episode, but the specific mention of muscle rigidity and resistance to movement is more indicative of catatonia.