Final answer:
The combination of low structure and strategic decisions requires greater collaboration in the decision-making process because these decisions have broader implications and lack a clear, predefined framework that guides the decision-making process.
Step-by-step explanation:
When comparing the dimensions of the decision-making process, particularly in terms of the level of structure and the nature of the decisions (operational vs strategic), the combination that generally requires greater collaboration is low structure and strategic. This is because strategic decisions tend to involve higher stakes and more complex considerations, impacting the overall direction of an organization. Additionally, low-structured decision processes lack rigid frameworks, thereby necessitating more discussion and input to reach a consensus and to ensure that diverse perspectives and potential consequences are thoroughly evaluated.
Operational decisions, whether high or low structure, typically involve routine processes that are often already well established within an organization, necessitating less cross-functional collaboration. High structure in decision-making processes implies a clear set of rules or criteria, which can streamline and potentially reduce the need for collaboration, as decisions will mostly rely on predefined parameters.
Overall, it's the ambiguous nature of strategic decisions and the absence of a rigid structure that amplifies the need for collaboration, to align on objectives and to ideate on solutions that are neither obvious nor predetermined.