Strong Sustainability Is Defined As

Strong sustainability is defined as:

A) Pollution reduction strategies
B) For sustainability to be achieved, the stocks of human and social capital, human-made capital, and ecological capital may be substituted for each other over time in a particular region
C) For sustainability to be achieved, the stocks of human and social capital, human-made capital, and ecological capital must each decrease over time in a particular region
D) For sustainability to be achieved, the stocks of human and social capital, human-made capital, and ecological capital must each be maintained or increase over time in a particular region