To gain more control over various businesses, managers should consider moving to what type of organizational structure?

The most suitable answer is centralized organizational structure. A centralized structure is characterized by a concentration of decision-making authority at the top levels of management. This type of structure allows managers to exercise greater control over the various businesses within the organization. When decision-making is centralized, it enables consistency and uniformity in policies and procedures, leading to more coordinated efforts across different areas of the business.

In a centralized organization, managers can more easily allocate resources, implement strategic initiatives, and enforce compliance with company standards. This can be particularly beneficial for larger firms or those with multiple business units, where a more cohesive approach is needed to align the activities of distinct teams or divisions.

The other options do not support the goal of increased control effectively. A simplistic structure might imply minimal hierarchy or guidance, which would likely lead to less control. A structured approach may provide organization but without the specific emphasis on central control. A flexible structure promotes adaptability and quick responses, potentially resulting in decentralized decision-making and less direct control by managers. Thus, a centralized structure is the best choice for managers seeking to enhance their control over various businesses.