How does the sentence "For years now I have heard the word ‘Wait!'" contribute to the text as a whole? It shows that King acknowledges that his critics have good intentions. It alludes to a historical example that King uses as evidence to support his argument. It emphasizes that King's critics who promote patience have not produced change. It shows that King's idea of justice is incompatible with the public's.

It emphasizes that King's critics who promote patience have not produced change

Explanation:

The sentence "For years now I have heard the word ‘Wait!'" contributes to the text as a whole by showing that Martin Luther King' s critics who have been preaching patience have not produced change.

This shows that MLK has been told continuously to wait and after many years, nothing has been done to produce change which prompts him to continue the struggle for freedom

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