a personality disorder is:

a.) a long standing pattern of behavior, thoughts, and feeling that are highly maladaptive for an individual or for people around that individual

b.) a mental illness that causes an individual to act in a way that is not consistent with his or her usual pattern of behavior

c.) a mental illness that causes an individual to act in a way that is not consistent with how other people would like the individual to act

d.) a social judgement that determines an individual's behavior is inconsistent with the social norms