The nutritionists may have biases that influence the study results, indicating they have a special interest in obtaining favorable outcomes for their backers.
The correct answer is:
The results indicating the diet as effective for 118 out of 120 people may be influenced by bias, considering the nutritionists were paid to try the diet and write favorable reports. This conflict of interest can lead to results that serve the interests of those funding the study rather than providing objective findings.
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