The correct answer is the one that shows that the description can be used correctly in both persuasive and expository writings, that is, option A is your correct answer.
This is because descriptive essays are those that are presenting something, showing the characteristics of an element. Persuasive essays, in turn, try to convince the reader about something and for that they need to show the characteristics of that "something".
These characteristics are presented through the description, therefore, the correct answer is option A. Also, you need to know that the description is presented through adjectives, which are words that represent the characteristics and something or someone.
You can find more information about descriptive language at the link below:
brainly.com/question/19256322?referrer=searchResults