The correct answer is A.
Barbara Jordan was an American politician and a leader of the Civil Rights Movement. She was the first African American elected to the Texas Senate and the first Southern African American elected to the United States House of Representatives.
She is best known for her famous and influential opening statement at the House Judiciary Committee hearings during the impeachment process against Richard Nixon.
On July 15, 1974, Barbara Jordan gave the 15-minute opening statement in which she defended the U.S. Constitution and its checks and balances designed to prevent abuse of power. Her speech helped to lead to Nixon's resignation over the Watergate scandal. Jordan won national acclaim for her integrity, rhetoric and intellect, all of which she manifested during her speech.