<em>Salarino heard that a</em> richly laden ship from Italy had been wrecked in the narrow channel which divides England and France. <em>The news was startling because Salarino thought of Antonio's ship and wished that it might not be one of his ships.</em>
The sort of search you need to conduct is official research investigation and direct sources of information like federal statistics and non-goverment organizations groups data.
The keywords that might help in the search would be "mental health issues and homeless", "homeless addictions", and "substance disorders and homeless".
Some research has found that is a direct connection between homelesness and substance use disorders.
It is not responsible to call homeless drug addicts, because beyond what you see there could be a life of pain and suffering.
Research states that homelessness is not a permanent condition but a temporary circumstance that should not define poeple's future.
But sometimes, the information that stems from the research indicates that there is a correlation between substance abuse and people becoming homeless.
The answer would be C, as it is the only one that makes sense when you read it. Hope this helps.