Which of these situations qualify as plagiarism

Plagiarism is when you copy someone else's work (usually word by word) and you do not acknowledge that you where not the person who wrote it, also, you do not cite where you received that info from. That is why we have copyright laws, where the author can choose whether to establish a penalty if copied. 

Iwould say you should mainly cover the areas about how it has no health issues or concerns, and also cover the cost, and benefits.