Compare the student text with the source.
Source: Carolyn Williams, ‘A “Natural” Label on Food Means Next to Nothing. Here’s Why.’ Published on CookingLight.com, 2016:
Here’s the situation: ‘Natural’ on food doesn’t mean much. In fact, ‘natural’ really guarantees little to nothing about a food’s quality, ingredients, or how it was grown or raised—meaning the food could (or could not) contain artificial ingredients, GMOs, chemicals, hormones, and antibiotics.
Student text:
Just because a food is labelled ‘natural’, that doesn’t necessarily mean that it is free of antibiotics, chemicals, hormones, GMOs or artificial ingredients.