1. Who is credited with formulating the core principles of development as described in the course outline?
The Brundtland Commission
Explication
The core principles of development, including sustainable development and related concepts, are most notably associated with the Brundtland Commission, which popularized the term and framework in its report. The source discusses these principles broadly but does not specify an individual, so the most appropriate credited entity is the Brundtland Commission, which formally proposed sustainable development.