The naacp took up the case of nixon v. herndon yo try to achieve fairness in: a. working conditions b. factory wages. c . housing. d. primary elections

D. Primary elections

Explanation:

This case was supported by the National Association for the Advancement of Colored People (NAACP) that tested the all-white primary's Texas Democratic Party.

The final decision restricted blacks from voting in the Texas Democratic Party primary.

Primary elections

(APEX)

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they became hereditary because there weren't many jobs for people in lower classes