Shawn refuses to step out of his house as he feels that the entire neighborhood has malicious plans for him. he says he can hear his neighbors talking in his head, conspiring to kill him. even though he hardly ventures out, he keeps a gun and a butcher's knife at hand to thwart any attempt to murder him. which of the following best describes shawn's condition? a. trichotillomaniab. cachexiac. schizophreniad. hypomania