D. Public services become racially segregated.
Jim Crow laws were a series of state and local laws in the United States that legalized racial segregation and discrimination against African Americans from the late 1800s to the mid-1960s. These laws mandated racial segregation in public schools, public transportation, public places, and public services, such as restrooms and drinking fountains. Therefore, the statement that best completes the diagram is that public services become racially segregated.