Final answer:
Option a is correct option.The phrase "one hundred years later" in King's speech stresses the continued lack of freedom and equality for African Americans a century after the Emancipation Proclamation, highlighting persistent racial discrimination and segregation.
Step-by-step explanation:
The phrase "one hundred years later" in Martin Luther King Jr.'s "I Have a Dream" speech refers to the century that had passed since the issuance of the Emancipation Proclamation by Abraham Lincoln in 1863. King emphasizes the ongoing struggle for freedom and equality for African Americans, highlighting that despite the passage of time, significant racial disparities and injustices persisted.
Option (a), "A century after the speech, the conditions for the Negro population remained unchanged," captures the essence of what King was expressing. However, this option is slightly misleading because it references a century after King's speech, not after the Emancipation Proclamation. Therefore, the most accurate interpretation of King's repeated use of the phrase is to illustrate that a hundred years after the proclamation that was meant to free the slaves, African Americans were still facing severe discrimination and inequality.
This period had been marked by systemic racism manifesting in segregation, discrimination, and a lack of economic opportunities, which sharply contrasted with the freedom promised a century earlier.