Based on an essay by Norman Cousins, what is the prevailing form of discourse used?

The prevailing form of discourse in Norman Cousins' essay is persuasion. In persuasive writing, the author aims to convince the reader of a particular viewpoint or argument, using logical reasoning, emotional appeals, and sometimes a call to action. Cousins' essays often address significant social and ethical issues, encouraging readers to reflect on their beliefs and prompting changes in attitude or behavior. This characteristic of engaging the audience to consider a specific perspective or take action aligns strongly with persuasive discourse.

While exposition provides information and explains ideas, descriptive discourse focuses on painting a vivid picture through sensory details, and narration tells a story by recounting events. These forms may be present in Cousins' works, but they do not encompass the primary intent to convince or persuade that characterizes the selected answer.