* The best statement that describes Scrum is: A framework to generate value through adaptive solutions for complex problems.
* Scrum is a lightweight framework that helps people, teams, and organizations to deliver valuable products in complex and uncertain environments.
* Scrum is based on empiricism, which means that knowledge comes from experience and making decisions based on what is observed. Scrum employs an iterative and incremental approach to optimize predictability and control risk.
* Scrum is not a defined and predictive process, a complete methodology, or a cookbook that defines best practices. Scrum provides the minimal boundaries within which teams can self-organize and create innovative solutions. References: Scrum Guide, Section 1 (Definition of Scrum) and Section 2 (Uses of Scrum)