How is a letter used as a form of argument? a. to display a more formal style and structure than is found in an essay b. to establish that your work will one day reach a wider audience c. to make a more personal and intimate appeal directly to another person d. to provide the audience with facts and information specifically for them

Option C. A letter can be used as a form of argument to make a more personal and intimate appeal directly to another person.

Explanation:

A letter can be used a form of argument, and it even be a more suitable option to get that argument across than perhaps an essay, as a letter is a more personal and direct communicating tool, in which the author can appeal directly to another person in a more intimate manner.