Question

which is the main persuasive appeal used in this ad?
animals need your help.
adopt a pet from your local shelter.
ethos (character)
logos (reason)
pathos (emotion)

Explanation:

The ad shows a dog behind bars with the text "Animals need your help. Adopt a pet from your local shelter." This imagery and text are designed to evoke an emotional response (sympathy for the animal's plight) in the viewer. Pathos is the persuasive appeal that targets emotions. Ethos (appeal to character/credibility) and logos (appeal to logic/reason) are not the main focus here as there's no emphasis on credibility of a source or logical arguments (like statistics on pet adoption benefits).

Answer:

pathos (emotion)