Need help with these Urban Economics open ended questions !!

CoC means Continuum of Care

1. Why does homelessness exist in the San Francisco Bay Area exists? 2. What type of shelter is the most common (modal) form of shelter for the homeless in the San Francisco Bay Area? Does this form differ by CoC? Explain why you think (these) are the modal form in each CDC. 3. The responses to homelessness seem to be of two types: responses directed to homeless people themselves (\"targeted\" - including Shelters, Tent cities, and Street services) and responses directed to the broader housing market (\"generic\" - such as increased high-density development and efforts to subsidize below market rate housing). Which type of response seems to be more effective in addressing the issue of homelessness