Final answer:
The directive leadership style might not be the best choice in this situation because the need for customized reports conflicts with the style's focus on getting things done. Employees' high skills and experience also suggest a need for a leadership style that promotes autonomy and creativity.
Step-by-step explanation:
In this situation, the directive leadership style might not be the best choice because of option b: clients indicating that they might want customized reports in the future, not just routine output. The directive leadership style is focused on setting clear expectations and getting things done, which might not align with the need for customization.
If the employees in the department are highly skilled and experienced (option a), they might benefit more from a leadership style that allows for autonomy and creativity.