Marion lives on the streets. she doesn't make much sense when she talks, and she believes that people in the sidewalk are watching her. she probably suffers from:

a. an anxiety disorder.
b. bipolar disorder.
c. a dissociative disorder.
d. schizophrenia.

d. schizophrenia

Explanation:

This is a mental disorder, is combination of genetics, environmental conditions and the disorder or chemical brain substances.

Some of it characteristics is that the people suffer from changes in personality, hallucinations and lost of sense of the reality.

It can just be controlled but not cure.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck