Question

what is kings main purpose in his \i have a dream\ speech?
to make people aware of how much racial inequality still exists and persuade them to work for change
to make people aware of racial injustice and inspire them to overthrow the government
to reinforce the idea that, although racial inequality exists, nothing can be done about it
to inform listeners of the history of racial inequality and segregation in the united states

Explanation:

Martin Luther King Jr.'s "I Have a Dream" speech aimed to highlight racial inequality and inspire action for change. He did not call for overthrowing the government, nor did he suggest nothing could be done. While he touched on history, the main goal was to spur action against ongoing inequality.

Answer:

to make people aware of how much racial inequality still exists and persuade them to work for change