What is audience? what is purpose? what is tone?

Audience - the assembled spectators or listeners at a public event such as a play, film, concert, or meeting.

                 - a formal interview with a person in authority.

Purpose - the reason for which something is done or created or for which something exists.

               - a person's sense of resolve or determination.

               - have as one's intention or objective.

Tone - a musical or vocal sound with reference to its pitch, quality, and strength.

         - the general character or attitude of a place, piece of writing, situation, etc.

         - give greater strength or firmness to (the body or a muscle).

         - harmonize with (something) in terms of colour.

Explanation:

Audience is the assemble spectators or listeners

Purpose is the reason for which something is done or created or for which something exists

Tone is the general character or attitude of a situation

dr. kings dream speech

explanation:

it was late in the day and hot, and after a long march and an afternoon of speeches about federal legislation, unemployment and racial and social justice, the rev. dr. martin luther king jr. finally stepped to the lectern, in front of the lincoln memorial, to address the crowd of 250,000 gathered on the national mall.

man vs. nature - first choice