Answer:
An article that shows a link between drinking soda and health problems
Step-by-step explanation:
You should always get your evidence from a credible source. A story about your friend, a quote from a parent or a random person's review is NOT credible. The most useful piece of information you have here is the article. It describes a link between soda and health issues. Your claim is that soda should be banned in large portions and that could be a reason for the ban. I really hope this helps you!