Ineed with this :
i would like you to explain what it means to have schizophrenia. what is schizophrenia and how does it impact an individual's daily functioning? how does it affect family members? what are the symptoms? why should schizophrenics be so likely to have alcohol and drug problems, too?

Schizophrenia is a long-term mental disorder of a type involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception, inappropriate actions and feelings, withdrawal from reality and personal relationships into fantasy and delusion, and a sense of mental fragmentation. 

Having schizophrenia can effect your daily functioning in many ways like;
Change in friends or social isolation, Difficulty at school or job, Sleep problems, Irritability, Difficulty telling reality from fantasy and An increase in unusual thoughts, perceptions and suspicions or paranoia. Odd manner of thinking and speaking

Harmful alcohol and other drug use, particularly cannabis and amphetamine use, may trigger psychosis in people who are vulnerable to developing schizophrenia. While substance use does not cause schizophrenia, it is strongly related to relapse.

Bis the correct answer.