Answer: B) President Lyndon Johnson
Explanation: The correct answer is B: President Lyndon Johnson, who during his tenure as president of the United States, became an important ally of the civil rights movement by passing several laws that ensured that the rights of blacks were fulfilled, among which there were the Civil Rights Law, as well as the Law of the Right to vote, which had a great impact on the United States since millions of Afro-Americans were able to vote. Similarly, all forms of racial discrimination in public places were banned, factors that were decisive in the development of such civil rights movements.