Read the following excerpt from a speech given by a national leader: The price of our current war is high; it costs money and it costs lives. But it does not cost our pride. It does not cost the guilt that would arise from knowing that we did nothing to intervene while our neighboring nations fell to despotic leaders. It does not cost the terror of knowing that our allies are unstable. It does not cost the fear that we, too, will be next to fall. Which sentence most accurately explains why the speaker's use of parallel structure is effective in this passage?