The social isolation, eccentricity, peculiar communication, and poor social adaptation that come with personality disorder place it within the schizophrenic spectrum

The answer is "schizotypal personality disorder".

Explanation:

An individual who suffers from schizotypal personality disorder have ecentric nature and these individuals also face difficulties in having relationship with others because they don't know that their behavior have impact on the relationship. As we all know that our behavior is important in any type of relationship, it depends on us how our relationship works.

i am pretty sure it is d.

answer; theory of mind;