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 a fence with the text "Animals need your help. Adopt a pet from your local shelter." This is likely to evoke an emotional response (pathos) in the viewer, as it plays on feelings of compassion and empathy for the animal's situation. Ethos (appeal to character/credibility) and logos (appeal to reason) are not as strongly emphasized here compared to the emotional appeal.

Answer:

pathos (emotion)