c. an individual's leadership style is essentially fixed
Explanation:
Fiedler's contingency leadership model assumes that the effectiveness of a leader or leadership is based on their circumstances or situation they face, no leadership style is generally the best. This model believe that the leadership style of every individual is fixed and every leader must discover their style of leadership. This model was introduced by Fred Fiedler during the middle of 1960s.
As it is very different to what most play writers (not sure if correct word) would write about. it showed and developed ideas that people weren't use to seeing on stage making it very different.