Answer:
Jim C. Collins.
Step-by-step explanation:
Jim C. Collins is a writer and researcher who identifies five levels of leadership: executive, effective leader, competent manager, contributing team member, and highly capable individual. He was an American writer, speaker and researcher born on the 25th of January, 1958. Most of his notable works were on organizational sustainability, business management and growth.
On the 16th of October, 2001, Jim Collins published a book on business management titled "Good to Great" where he talked about why some companies make the leap and others do not. Each of the five levels of leadership according to Jim Collins are;
1. Highly capable individual.
2. Contributing team member.
3. Competent manager.
4. Effective leader.
5. Great leader.