Answer: A
Americans celebrate Dr. King because he led people to create equality.
Explanation:
I will give you the exceprt from his speech that is supporting the answe A)
“and when we allow freedom ring, when we let it ring from every village and every hamlet, from every state and every city, we will be able to speed up that day when all of God’s children, black men and white men, Jews and Gentiles, Protestants and Catholics, will be able to join hands and sing in the words of the old Negro spiritual: ‘Free at last! Free at last! Thank God Almighty, we are free at last!'”
In this excerpt we can clearly see that the purpose and the central idea of his speech was for people to see the powerness of freedom and people are free If they are equal and if they are respecting others culture, education, nationality, religion and more.
