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)

Explanation:

Ethos is an appeal to ethics, credibility, or character. In this ad, it uses the credibility of dental professionals (implied by the person in a white coat, likely representing a dental professional) and the statement "THE BRAND MORE DENTAL PROFESSIONALS RECOMMEND" to persuade. Logos is an appeal to logic or reason (no data/statistics here). Pathos is an appeal to emotion (no emotional language or imagery focused on feelings like fear, joy etc. here).

Answer:

ethos (character)