Following the end of the Civil War, the government passed amendments to grant civil rights to African-Americans. However, the failure of the reconstruction and discontent of southern states led them to pass the "Jim Crow" laws that enforced segregation. The injustice created a nonviolent movement by the African-Americans, and led by W.E.B Dubois, opposed Jim Crow. He started the National Assosication for the Advancement of Colored People(NAACP). The government started endorsing their stance and cases such as Brown v The Board of Education emerged, ending segregation in school. The Montgomery bus boycott and the leadership of Martin Luther King year later, finally the rights of all African-Americans were established by law.
Because the grammar is incorrect for "yet get involved", because what they meant by that is that you can also be involved with the challenges therefor the answer is D.
Fernando should hold the same opinion regarding the ban on water bottles. He should not change it, despite his new source.
His new argument should be more focused on the conversation of environment. This can be done by mentioning the cons of plastic on seas and animals like dolphins etc.
He should also mention the hazardous effects this material has on human beings, since it contributes to pollution.
He can finish his argument by suggesting new ways on how to stop the usage of plastic bottles, along with this he should also mention alternative materials to plastic bottles.