Sustainability is measured by:

Question

Accepted Answer

The correct option is 3:

Sustainability is fundamentally defined by the "Three Pillars" or the Triple Bottom Line (TBL) approach. These three interconnected and interdependent pillars are **Economic, Environmental, and Social**. For any development or activity to be truly sustainable, it must achieve a balance among these three dimensions, ensuring that current needs are met without compromising the ability of future generations to meet their own needs. Therefore, measuring sustainability requires assessing performance across all three principles simultaneously—economic viability, environmental stewardship, and social equity. Focusing on just one or two pillars leads to incomplete and ultimately non-sustainable development.

The incorrect option is 1:
Assessing performance of Social and Environmental principles excludes the critical Economic dimension. Without economic viability, any social or environmental initiative cannot be maintained in the long term, making it non-sustainable.

The incorrect option is 2:
Assessing performance of Social and Economic principles ignores the Environmental dimension. This approach, often similar to traditional, non-sustainable development, fails to account for resource depletion, pollution, and climate impact, thus degrading the natural systems upon which both society and the economy depend.

The incorrect option is 4:
Assessing performance of Environmental and Economic principles neglects the Social dimension. Social well-being includes issues like poverty reduction, community fairness, human rights, and quality of life. Ignoring these social outcomes leads to inequitable development that can cause instability and unrest, which undermines long-term sustainability.