Answer:
Calista is most likely suffering from Schizotypal Personality Disorder (letter C).
Step-by-step explanation:
People who suffer from Schizotypal Personality Disorder are often perceived as strange or eccentric by their peers. It is common for them to show a peculiar way of speaking, dressing, and behaving. Schizotypal Personality Disorder is a mental disorder, characterized by extreme social anxiety. Those who suffer from it find it difficult to interpret social clues, misinterpreting and distrusting others. From the description is the passage, we can safely say Calista has Schizotypal Personality Disorder.