Because you are taking what one writer said and using it in your own words. you can be sued for it if you try to puplish something that isnt your words and be kicked out of school when writting a paper and not properly citing something
The answer is B.ethos.
Let's first look into the options:
Ethos- appeal to ethics.
By using ethos, the people use authority or credibility to peesuade people.
Pathos- appeal to emotions
By using pathos, people use audience’s sympathy or empathy to persuade them, such as using stories and photos to stimulate emotions.
Logos- appeal to logic
By using facts and figures, people are persuaded to believe the reason.
In this case, ethos is used as dentists are authorities.
Hope it helps!
Autobiographies are true stories of a persons life written or told by that person