During reconstruction, groups such as the ku klux klan . a. tried to pass laws to limit the rights of freed people. . b. were disbanded by the fifteenth amendment. . c. used violence to prevent freed people from voting. . d. supported the passage of the enforcement acts.

During Reconstruction, groups such as the Ku Klux Klan used violence to prevent freed people from voting. The correct option among all the options that are given in the question is the third option or option "C". I hope that this is the answer that you were looking for and the answer has come to your help.