Which best describes the response of authorities in Birmingham, Alabama, to civil rights protests in the 1960s? They sometimes used violence to resist the protests. They agreed with the protesters' aims. They came to accept, over time, the presence of the protesters. They responded peacefully to the protesters.

As Birmingham, Alabama, was considered one of the most segregated cities in the US during the 1960s, protests started to begin with boycotts intended to end segregation in jobs, public facilities, restaurants, schools, and stores. Consequently, the Birmingham campaign, which was a peaceful movement organized by the Southern Christian Leadership Conference (SCLC) and led by Martin Luther King Jr., carried out nonviolent campaigns aimed to stop segregation of African Americans in Birmingham, Alabama. The response of the Birmingham authorities sometimes used violence to resist the protests (Option "A"). However, these nonviolent direct action protests, which drew the world's attention to racial segregation, led the civic authorities to change those discrimination laws.

The answer is A) They sometimes used violence to resist the protest. For example the U. S. government used fire hoses as well as attack dogs on child protesters in the 60's. After the bombings in Birmingham, Alabama on May 11th 1963, the government also called in Federal Troops to subdue those protesting.