Final answer:
While exact estimates can vary, it is evident that homelessness is a significant global issue, with over half a million people estimated to be homeless in the United States and 1.6 billion people living in inadequate housing conditions worldwide. The problem is exacerbated by factors like high rents, economic downturns, and social issues.
Step-by-step explanation:
Based on the information provided, homelessness is a significant issue affecting both adults and children globally. While the data does not provide an exact number matching the question's choices, it highlights that more than half a million people in the U.S. are estimated to be homeless, with significant numbers living on the streets or in shelters. The number of homeless people has increased in recent years due to factors such as skyrocketing rents, economic conditions, and social issues like substance abuse and mental illness. In Los Angeles alone, there were nearly 60,000 homeless individuals, which is indicative of the larger national issue.
At a global level, the United Nations has recognized homelessness as a serious violation of human dignity, with an estimated 1.6 billion people living in inadequate housing conditions. This global perspective emphasizes the scale and seriousness of homelessness beyond the United States. The exact number matching the estimated weekly homeless figure is not provided in the referenced information, but it's evident that the scale of the problem is extensive, likely surpassing the lower-end figures offered by the question.