Which document would be most likely to discuss the limitations imposed on the movement of black South Africans in urban areas?

The Influx Control policies would be the most relevant document regarding the limitations placed on the movement of black South Africans in urban areas. These policies were specifically designed to manage and restrict the flow of black individuals into urban environments, often requiring them to carry passbooks and obtain permits that dictated where they could live and work. This control not only impacted their mobility but also their rights to reside in or even visit certain areas.

In contrast, the Population Registration Act focused on classifying South Africans by race and did not directly regulate movement, while the Morality Act pertained to prohibitions on interracial relationships and marriages, which, although indicative of the social limitations under apartheid, did not address movement issues. The Bantu Education Act dealt with education segregated by race, influencing the education system rather than providing a framework for urban migration control. Thus, the focus of Influx Control policies on restricting urban movement makes it the most directly related document to the question.