Question

which is the main persuasive appeal used in this ad?
the brand more
dental professionals
recommend
dentafresh
toothpaste
dentafresh toothpaste
ethos (character) logos (reason) pathos (emotion)
logos
pathos
ethos

Explanation:

Ethos is an appeal to credibility or character. In the ad, it mentions "THE BRAND MORE DENTAL PROFESSIONALS RECOMMEND". Dental professionals are seen as authorities in the field of oral health. By associating the toothpaste with dental professionals (who have a trustworthy character in this context), the ad is using ethos. Logos is an appeal to reason (like facts and statistics), which isn't the main focus here. Pathos is an appeal to emotion (like fear, joy), and there's no strong emotional appeal shown compared to the authority - based one.

Answer:

Ethos