I think this is more observation awareness than anything else. It's testing your ability to observe, in your own way, what might mislead people into believing her store is better others because of (This is the important part) that lack of credentials and detail, and/or what those ratings actually mean. There are a ton of reasons those ratings could exist. Whether that be because of uncontrollable outcomes or whether they were just made up to make her store look better. I'm not saying it's a fact, but it's possible and could mislead people in those ways.