Answer:
d. Antisocial personality disorder
Step-by-step explanation:
Antisocial personality disorder: In abnormal psychology, the term antisocial personality disorder is referred to as a mental condition or mental illness that is explained in terms of an individual consisting of a long-term pattern of exploiting, manipulating, or violating the rights of the other person without showing any remorse or guilt.
An individual experiencing antisocial personality disorder often finds difficulty in maintaining relationships at work and is considered to be criminal as well.
Symptoms: Persistent lying to exploit others, using charm to manipulate another person for personal gain, disregard for right and wrong, etc.
Causes: Environmental factors, genetic factors, etc.
In the question above, Ruth's behavior is consistent with that seen in antisocial personality disorder.