Sustainable development was defined for the first time in thea.Kyoto-declarationb.Brunt land reportc.Johannesburg Declarationd.Rio-declaration

The concept of sustainable development was defined for the first time in the Brundtland Report, officially known as "Our Common Future," which was published in 1987 by the World Commission on Environment and Development (WCED). This report emphasized the need for a balance between economic development, environmental protection, and social equity. It is often regarded as a significant milestone in the discourse on sustainable development, introducing the often-cited definition: "Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs."

Final Answer

b. Brunt land report