Answer:
A). Dissociative fugue.
Step-by-step explanation:
'Dissociative fugue' is elucidated as the dissociative psychiatric disorder in which the patient suffers from severe amnesia which might be the product of a psychological trauma or illness. In such a disorder, the person loses his/her sense of identity and other associated autobiographical information about himself/herself.
As per the given description, option A correctly describes Verna's disorder as her loss of awareness about her past experiences('how she ended up in her current surroundings') implies that she suffers 'amnesia' and her comfortable and non-concerned attitude to know about her past reflects that 'she is attempting to escape/dissociate the stressful conditions(which might have led her to the present situation). Thus, this strengthens the conclusion that she is experiencing 'dissociative fugue'.