Final answer:
Technological factors are integral to aiding sustainability, but they are not one of the three primary categories, which are economic, social, and environmental, driving the focus on sustainability.
Step-by-step explanation:
The factors driving an increased focus on sustainability are generally grouped into three main categories: economic, social, and environmental factors. These three categories are interconnected; however, they each have distinct ways in which they promote the urgent need for sustainability. Technological factors indeed play a role but are typically seen as a cross-cutting aid or tool helping to address sustainability rather than a distinct driving factor.
Economic factors include the push for sustainable development, resource efficiency, and greening economies to reduce ecological footprints and preserve resources for future generations. Social factors encompass social movements, public awareness, and consumer pressures demanding corporate responsibility and ethically sourced and produced goods. Environmental factors involve recognizing the limits of natural resources and the need to maintain ecosystem services. Technological factors, mentioned in the question options, contribute to sustainability through innovation and can be leveraged within any of the three main categories to aid sustainable practices.
Therefore, the answer to the question is Technological factors (d), as it is not one of the three centers of focus when considering the primary categories that drive an increased focus on sustainability.