Final answer:
Brenda Kraft is b) an effective manager who achieves high project completion rates with high-quality products and low defects.
Step-by-step explanation:
The high project completion rate of Brenda Kraft's section, along with the high-quality product and low defects, indicates that she is an effective manager. By being able to delegate responsibility and having a strong understanding of the basic management processes, she is able to achieve these results with fewer full-time people than other managers.