Which one of the following conferences/summit is also known as UN Conference on Sustainable Development (UNCSD)?

Sustainable development refers to the development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

The Rio+20 Conference:

1. The United Nations Conference on Sustainable Development (UNCSD) took place in Rio de Janeiro between 20-22 June 2012, commonly known as the Rio+20 Conference.
2. It presented an opportunity to redirect and re-energise political commitment to the three dimensions of sustainable development: economic growth, social improvement and environmental protection.
3. The two main highlights of Rio+20 are - an agreement to develop a set of global Sustainable Development Goals (SDGs) and to establish a high-level political forum to ensure tangible action towards sustainable development.

• The Stockholm Conference, 1972 was a conference on international environmental issues called UN conference on the human environment.
• The Rio de Janerio, Conference, 1992 is also known as the UN conference on environment and development in which Agenda 21 of a global plan for sustainable development was adopted.
• In the Johannesburg Summit (2002), goals and targets were identified to implement Agenda 21 and it is also called the World summit on sustainable development.