Hector has written this topic sentence.

Dr. King’s "I Have a Dream” speech includes many metaphors to show the suffering of Black people.

Which excerpt from the speech best supports this topic sentence?

Now is the time to lift our nation from the quicksands of racial injustice to the solid rock of brotherhood.
And they have come to realize that their freedom is inextricably bound to our freedom. We cannot walk alone.
The whirlwinds of revolt will continue to shake the foundations of our nation until the bright day of justice emerges.
This note was a promise that all men, yes, black men as well as white men, would be guaranteed the “unalienable Rights of Life, Liberty, and the pursuit of Happiness.