Mario is writing an argument supporting a proposed bike-helmet law. mario includes a personal example explaining that he once had a bike accident and avoided serious injury because he was wearing a helmet. if mario revises his argument, he should remove the personal example because it weakens his argument. learn more about how bike helmets protect cyclists from impact injuries. talk to other cyclists who have stories or experiences to back up his own. balance his personal example with well-researched, factual examples.