Final answer:
The most accurate statement reflecting the current state of mental health is that deinstitutionalization has led to inadequate community support, often resulting in homelessness or incarceration. Option D is correct.
Step-by-step explanation:
To determine which statement best reflects the current state of mental health and mental illness, let's consider the provided information and overall knowledge on this topic.
Considering that mental health-care costs are substantial and a large percentage of adults and children with mental illness do not receive adequate care — partly due to insufficient community resources, especially for the homeless with mental illness — the statement A) 'Mental health-care costs exceed the costs for cancer care.' may have validity.
However, statement D) 'Deinstitutionalization has reduced the revolving door effect.' is also pertinent as the process of deinstitutionalization, particularly during the Reagan era, has led to many people with mental illness leaving institutions but not receiving sufficient community support, often resulting in homelessness or incarceration.
Given the facts on the prevalence of mental disorders, the inadequacy of community resources for the homeless with mental illness, and the impact of deinstitutionalization, the most accurate statement reflecting the current state of mental health and mental illness seems to be D) 'Deinstitutionalization has reduced the revolving door effect.'
However, it is important to note that while deinstitutionalization sought to provide freedom and reduce hospital readmissions for those with mental illness, it often led to inadequate care and support in the community, contributing to issues such as homelessness and inadequate access to mental health services.