Thanks for the question! So the author is certainly appealing to science. And you could even say the author is applying to the superior authority of science over common opinion. But the question is, is the author dismissing out of hand the relevance of evidence based on everyday experience? Not really. The counterargument that the author is using is a pretty good one; it’s not just dismissing the opposition for no reason. (C) is a bit too strong and therefore incorrect. It’s definitely not as accurate a depiction as (B), which explains what the author does with the alternative interpretation of eating large amounts of chocolate followed by an outbreak of acne.
Hope this helps! Feel free to ask any other questions that you might have.