Which of the following is a key performance indicator (KPI) at GM?

The correct answer highlights a comprehensive approach to key performance indicators (KPIs) that encompass multiple aspects critical to the operational success of General Motors. By focusing on production quality, efficiency rates, safety incidents, and employee engagement, this option reflects GM's commitment to not only output and sales but also to the well-being of its employees and the overall quality of its products.

KPIs are essential for measuring an organization's performance against its goals, and in the context of GM, they are likely to track various operational elements. High production quality ensures that the vehicles produced meet safety and reliability standards, while efficiency rates pertain to optimizing processes and minimizing waste. Monitoring safety incidents is crucial for maintaining a safe working environment, which affects employee morale and productivity. Lastly, employee engagement is vital as it often correlates with lower turnover rates and higher job satisfaction, impacting overall performance.

The other options are limited in scope. Focusing solely on sales growth, marketing outreach, or customer satisfaction ignores the multifaceted nature of performance measurement that encompasses operational excellence, employee welfare, and product quality—areas that GM prioritizes for sustainable success.