Answer
Sustainable development is development that is designed to improve the economic conditions of populations in the world's less-developed countries (LDC s).
Step-by-step explanation
sustainable development are the well organised principles which are set with a purpose of meeting peoples development goals. It is designed in a way such that it describes an economy in equilibrium with basic ecological support systems.
it meets the world's current needs while making sure that resources will be available to meet future needs.
Some of its main goals are to make sure that there is gender equality,people are entitled to good health ,there is enough clean water and sanitation,eradication of poverty,good education and a reasonable economic growth among others.