What does the speaker want the people he is addressing to do? a. Fight with one another b. Make each other happy c. Slip away from a motorcycle cop d. Play music that will make people feel deep emotion

The speaker wants the people he's addressing to D. Play music that will make people feel deep emotion this can be expressed by the diction and word choice in the poem I assume you're talking about "Jazz Fantasia" by Carl Sandburg. An example is the lines below:

sob on the long cool winding saxophones.

Go to it, O jazzmen.