Critical Reasoning (CR) | Janet : Sugar in the diet is healthy, despite what some people say

Janet : Sugar in the diet is healthy, despite what some people say. After all, most doctors eat foods that contain sugar, and who knows more about health than doctors do?

Which one of the following is a flaw in Janet’s reasoning?

A.Voicing out an opinion that lacks evidence
B.Generalizing qualities specific to one group
C.Contradicting popular opinion by using unsubstantiated evidence
D.Appealing to authority, even when different authorities give conflicting advice about an
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