Final answer:
The correct answer is option c) Paranoid personality disorder.
Step-by-step explanation:
If Ivan distrusts other people and suspects them of having malicious intentions without sufficient cause, this may indicate a personality disorder characterized by pervasive distrust and suspicion. Based on the description provided, the personality disorder Ivan is most likely to have is c) Paranoid personality disorder. This disorder involves a long-standing pattern of pervasive distrust and suspicion of others. Individuals with paranoid personality disorder often interpret others' actions as malevolent, are reluctant to confide in others, and bear grudges.
In contrast, antisocial personality disorder is marked by a disregard for the rights of others, borderline personality disorder by unstable relationships and moods, and narcissistic personality disorder by a need for admiration and a lack of empathy.