Final answer:
The DPCI takes into account clarity of scope, organizational complexity, and agreement among their constituents' opinions when evaluating supplier diversity strategies.
Step-by-step explanation:
The external attributes considered in the Diversity Program Complexity Index (DPCI) are clarity of scope, complexity of the organization, and agreement among their constituents' opinions. In the context of supplier diversity strategies, it is crucial for the organizations to understand the complexity of managing a diverse set of suppliers, including how well the program's scope is defined, the inherent complexity within the organization related to managing diversity, and the extent to which there is cohesion or agreement among the constituents they serve on the importance and implementation of the diversity strategies.