Simplify the following text for a Grade 12 native English-speaking person.
Original: The term was used by the Brundtland Commission which coined what has become the most often-quoted definition of sustainable development as development that `` meets the needs of the present without compromising the ability of future generations to meet their own needs . ''
Simplified: The term used by the Brundtland Commission defined it as development that `` meets the needs of the present without compromising the ability of future generations to meet their own needs . ''