The fifteenth amendment: select one: a. sought to guarantee that one could not be denied suffrage rights based on race. b. made states responsible for determining all voter qualifications. c. granted women the right to vote in federal but not state ""

a. sought to guarantee that one could not be denied suffrage rights based on race.

Explanation:

Reconstruction era brought three amendments which safeguards the destiny of the millions of former slaves. Fifteenth amendment of the constitution of the United States of America which was ratified in 1870, was the last among the chronological order, which address the federal and states government to not deprive any citizen the voting rights on the basis of race, color and previous conditions of servitude.

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answer; illegible handwriting;