Final answer:
Dr. King's response to the untimeliness critique was emphasizing the long wait for freedom and the likely inaction of the new administration.
Step-by-step explanation:
Dr. Martin Luther King's response to criticism regarding the timing of his actions in Birmingham can be gleaned from his famous 'Letter from a Birmingham Jail.' This document defends the immediacy of the civil rights actions. He conveyed the urgency of the matter with two key statements: The notion that African Americans had waited over 340 years for freedom and that waiting any longer would continue to result in vain hopes for change, which is identified in option D. Additionally, he implied that relying on the new city administration to change things without direct action was futile since the new administration would likely prove as unresponsive as the previous ones, reflecting option A.