Final answer:
Logical incrementalism option c, is the approach that is most useful for rapidly changing environments requiring consensus and resource development because it emphasizes flexibility and incremental steps in decision-making.
Step-by-step explanation:
The approach that is most useful when the environment is changing rapidly and it is critical to build consensus and develop needed resources before fully committing to a specific strategy is C) logical incrementalism. Logical incrementalism emphasizes flexibility, consensus building, and the use of incremental steps during decision-making processes. This approach aligns with the need to adapt to dynamic conditions, validate decisions from multiple perspectives, and ensure that viable paths remain open, even in more challenging futures. In contrast, command-and-control policies (often associated with planning mode) and market-oriented policies (linked to adaptive mode) may not be as effective as logical incrementalism in environments that are unpredictable and require collective buy-in for strategic changes.