Answer:
Quantitative measurements
Explanation:
A participative approach in management involves involving employees in decision making processes in the organization. This is a transparent approach that allows for effective communication between managers and employees.
In the above case, quantitative measurements will better convince employees because this would better provide an objective evidence to show that corrective actions work better in improving customer satisfaction. Anecdotes in comparison would merely be hearsay accounts and won't be taken seriously by employees
