Hello candidate,

The Question you have mentioned is not getting clear and so I am telling you about the main aim of agenda 21.

So, on a rough note Agenda 21 is a comprehensive plan of action to be taken globally, nationally and locally by organizations of the United Nations System, Governments, and Major Groups in every area in which human impacts on the environment.

Moreover, it's a plan of action made for attaining sustainable development in various sources.

Hope it helps!!