Which tragic element refers to the integration of the chorus into the plot? spectacle character song plot

The answer is: song

In the ancient Greek drama was stared to used a chorus into the play, this was a group of actors who described and commented over the main action of the play, or over the plot with song, dance and recitation, in order to integrate the chorus to the plot they used the song.  

an argumentative essay presents objectively a topic and its main characteristics. besides, it states all this information and facts by giving authentic and substantiated proof to the audience. by contrast, a persuasive text purpose is to convince the audience about some facts by presenting them according to his/her emotions and feelings. the main purpose of a persuasive text is to convince the audience to agree with the author´s opinion. on the other hand, in the argumentative essay, the author leads the writer to recognize his/her point of view as the correct one.

d understatement