Answer: Tertiary Prevention
Explanation: Tertiary prevention helps to reduce the burden of an ongoing injury or illness that has long lasting effects on an individual. This is established by providing health aids to help individuals manage their long-term health problems and injuries (e.g. chronic diseases, impairments), which in turn enhance their quality of life.
However, in the case of schizophrenia (a disorder that affects thinking and behavior of an individual, which is often genetically or environmentally induced), is a long-term illness that have no cure but can be managed.