GMAT Critical Reasoning (CR) | Re: Sociologist:Widespread acceptance of the idea

My 2 cents:

(C) legislators often seem to be guided by the assumption that individuals are incapable of looking after their own welfare,even though these legislators also seem to value democracy

Here, often is a problem. It does not fit well in the argument. The sentence as a whole is not an assumption of the argument.

From the stem, it is given that "After all,the assumptions that appear to guide legislators will often
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