Final answer:
Decisions not under operations managers' control include corporate strategy, financial targets, and board changes, as these are led by top executives and the board.
Step-by-step explanation:
The decision that would NOT be under the direct control of operations managers is typically related to overall corporate strategy, such as mergers and acquisitions, setting of financial targets, or changes in the board of directors. Operations managers are generally responsible for day-to-day activities within the company, such as production schedules, inventory management, and quality control. Decisions at the strategic level, especially those involving significant financial implications or corporate governance, are usually the purview of top executives and the board.