Sheila, who has schizophrenia, displays virtually no emotion, no matter how dramatic an event; this is a _____ symptom of schizophrenia. a. secondary b. positiv

I believe the answer is: Negative

Negative symptoms of schizophrenia refers to all the symptoms that make the patient experience less mental function.
These symtopms would include things such as lesser ability to experience emotion, unability to remember a certain memory, somehow disorted motor skills, etc.