The correct answer is C: Conforming to society. Thoreau developed a set of postures - under the name of "Self Reliance" - that explained how an individual's existence can be only be lived to the fullest if he has absolute confidence in his abilities and the utmost trust in himself, while confining into a life away from society. One of his main arguments was the fact that common folks spend too many resources (money, time, effort, etc) trying to adapt to society's patterns like fashion, hindering them from growing a strong self-developed sense of taste or giving the proper value to its voice and individuality.