A person who shows unpredictable moods, outbursts of emotions, quarrelsome behavior and conflicts with others is suffering from?

The correct option is A Borderline personality disorder (BPD). Borderline personality disorder is a serious psychiatric illness. It is a serious emotionally unstable personality disorder. The main feature of this disorder is a pervasive pattern of instability in interpersonal relationships, self-image and emotions. It is characterized by an unpredictable mood or mood swings, quarrelsome behaviour and conflicts. So, the correct answer is 'Borderline personality disorder (BPD)'.