Which best describes the policy stemming for the 1896 plessy v. ferguson supreme court decision

In Plessy v. Ferguson, the Supreme Court ruled that facilities that were "separate but equal" were permissible under the US Constitution.

This allowed the Jim Crow laws to develop wherein African Americans went to different schools, ate at different restaurants or in different sections, and were generally segregated from the population

States passed segregationist legislation and expanded Jim Crow.

Explanation:

This is For USA Test Prep if you need help with it.  :)

D) Radio

Explanation:

Radio is the only way you can hear out of the 4 options. Magazines, newspapers, and books are all digested through reading.