Incorporating the social benefits of production that involves positive externalities would necessarily: move the demand curve to a location below and to the left of the demand curve that incorporates only the private benefits. cause the demand curve to be flatter than a demand curve that incorporates only the private benefits. move the demand curve to a location above and to the right of the demand curve that incorporates only the private benefits. cause the demand curve to be steeper than a demand curve that incorporates only the private benefits.