Final answer:
Mack's approach to handling quality issues without disclosing them and planning to address them in the coming months is reactive. He deals with problems after they occur rather than preventing or sharing them, which differs from proactive, transparent, or collaborative approaches.
Step-by-step explanation:
The student asked what approach Mack, the plant manager, uses to handle quality issues by not disclosing them and planning to fix them within the next few months. Mack's approach can be defined as reactive, which is one of the options provided. A reactive approach involves waiting for problems to arise and then dealing with them, rather than being proactive, which means anticipating and preventing potential problems before they occur. Being transparent involves open and honest communication about issues as they are detected, and a collaborative approach would include working with others to find a resolution. However, since Mack is dealing with the issues after they have been identified and not sharing information about them, his strategy is reactive.