Final answer:
The DPCI categories are external, internal, technological, and environmental. In IPE, three levels of analysis are individual, state, and system.
Step-by-step explanation:
The Darnall-Preston Complexity Index (DPCI) groups project attributes into four categories: external, internal, technological, and environmental. Therefore, the correct answer to complete the sentence would be 'technological'. This index is used for evaluating the complexity of a project by examining various dimensions that can affect its outcome.
In the field of International Political Economy (IPE), the three levels of analysis used are: individual, state, and system. Each level provides a different perspective on how economic and political factors influence each other globally, allowing for a comprehensive understanding of international interactions.