What does the suffix -Ist mean in the word optimist?

Keeping wolves as pets is wrong. wolves are not pets.they're wild and natural-born killers. people who keepwolves in captivity are self-centered and vain. they thinkit's some kind of status symbol to own a wolf. but wolvesneed to roam free, participate in the thrill of the hunt, filltheir bellies with raw meat, and socialize with their packmates.which type of appeal does the passage primarily use? oa. ethos