Final answer:
Rhetoric is the art of argument and persuasion, involving appeals to ethics, logic, and emotions. It is used in both formal writing and everyday spoken language.
Step-by-step explanation:
Rhetoric is the art of argument and persuasion, and it involves using different means of persuasion to effectively communicate a position or side of an argument. These means of persuasion include ethos, which appeals to ethics and the speaker's credibility; logos, which appeals to logic and reasoning; and pathos, which appeals to emotions. Rhetoric is not only used in formal writing or literature, but it is also the basis of everyday spoken language and is used to convince an audience in various contexts.