Answer:
C) Abraham Lincoln
Step-by-step explanation:
In the second paragraph of the "I Have a Dream" speech, Martin Luther King states:
"Five score years ago a great American in whose symbolic shadow we stand today signed the Emancipation Proclamation."
In these lines, King is referring to Abraham Lincoln. The Emancipation Proclamation was an executive order issued on January 1, 1863. It declared that all slaves who were under the government of the Union would immediately be free.