Final answer:
The Definition of Done is a set of criteria that ensures that a product increment is complete and meets the established standards. It's objective, essential, and may evolve with the project.
Step-by-step explanation:
The statement that best characterizes the perspectives of the Definition of Done (DoD) is: a set of criteria that must be met before a product increment is considered complete. The Definition of Done is essentially a checklist of requirements that a particular product increment must adhere to in order to be considered finished at the end of a sprint or project cycle. This entails meeting both the identify criteria and constraints that ensure the product's functionality and quality levels, as established by the development team or project stakeholders.
It is not meant to be a subjective measure based on individual team members' opinions, nor an optional guideline for project completion. Additionally, while it may start as a baseline at the beginning of a project, the Definition of Done should be revisited and can be evolve throughout the project to accommodate changes in technology, market demands, or team learning.