Final answer:
Given the context of the experiment relating to McDonald's and body fat increase, an unverified assumption might point towards a 15% increase in body fat. However, no specific answer can be confirmed without the documentary or study results. Health guidelines recommend a daily intake of 10% saturated fats and 20% unsaturated fats.
Step-by-step explanation:
The question seems to be referring to an experiment similar to that featured in the documentary Super Size Me, where the subject ate only McDonald's food for 30 days. However, the question provided does not specify the exact results of the body fat increase from that experiment. In the context of the document, if one were to take a guess based on the available answer choices and popular knowledge of the documentary, a significant body fat increase such as 15% might be a reasonable assumption. It is crucial to note that such an increase in body fat percentage would be considered very unhealthy. The dietary guidelines as per Figure 1.8 suggest that the recommended percentages of daily calories from fats should be 10% saturated fats and 20% unsaturated fats. Exceeding these percentages, especially through fast food consumption, can lead to health issues like obesity, cardiovascular disease, and metabolic syndrome.