Answer:
C. He is disappointed in America’s actions, but is confident the country will learn from its mistakes and make changes.
Explanation:
The given lines are from President Lyndon B. Johnson's speech that he gave in front of the Congress on March 15, 1965. This speech was dubbed "The American Promise" and details the events of the Selma demonstration in Alabama.
President Johnson mentions the Selma incident where blacks demonstrated their equal rights as Americans. And in that demonstration, Jimmie Lee Jackson was shot at by a state trooper, fatally wounding him. It was this incident that the President was referring to when he talked about "what has happened in Selma." He reiterated that "There is no cause for self-satisfaction in the long denial of equal rights of millions of Americans." But as Americans, they can have a "cause for hope and for faith in our Democracy", meaning there is hope for a change.
These lines show how the President feels disappointed in the events but is also confident of the possibility of learning from the mistakes and bring about changes in America.
Thus, the correct answer is option C.