Answer: She uses an emotional appeal.
Step-by-step explanation:
“On Making an Agreeable Marriage” is a title given to Jane Austen's letters to her niece, Fanny. In these writings, Austen discusses the subject of marriage, and loveless marriage in particular. She writes that "Anything is to be preferred or endured rather than marrying without affection."As her niece is very young, Austen attempts to give her love advice. In doing so, she uses an emotional appeal. An emotional appeal is an attempt to persuade other person to adopt the same opinion that we have by getting an emotional reaction from them.