Question

which action did the ku klux klan most commonly use?
a they used violence to intimidate voters from participating in elections.
b they used legal means to file lawsuits to discriminate against religious groups.
c they used petitions to influence school authorities to segregate educational facilities.
d they used local ordinances to prohibit immigration from undesirable countries.

Explanation:

The Ku Klux Klan (KKK) was a white supremacist group. They often resorted to violence. Intimidating voters through violence (like attacking African - American voters during Reconstruction era elections) was a common Klan tactic. Filing lawsuits (Option B) was not their common modus operandi as they were more about extra - legal violence. Petitions (Option C) were not their main tool; they were more about force. Using local ordinances (Option D) was not their typical action compared to violence.

Answer:

A. They used violence to intimidate voters from participating in elections.