Theo is quite a loner. He walks to class by himself, does not talk to anyone, and appears indifferent to other people. It is clear that Theo neither desires nor enjoys closeness with others. He does not act in any obviously unusual ways, nor does he appear to possess strange beliefs about the world. Of the following personality disorders, Theo appears to be

a. avoidant

b. antisocial.
c. schizotypal.
d. schizoid.

c