Answer: The answer is b). Avoidant personality disorder
Explanation: Avoidant personality disorder (AvPD) is characterised by social discomfort and avoidance of interpersonal contact. The main coping mechanism of those with AvPD is avoidance of feared stimuli. People with this disorder are often consider themselves to be socially inept or personally unappealing and avoid social interaction for fear of being ridiculed, humiliated, rejected, or disliked.
Combination of high-sensory-processing sensitivity coupled with adverse childhood experiences may heighten the risk of an individual developing AvPD. This is the personality disorder that Elena is going through from the above question.