Concept:The military often seizes power when civilian rulers are judged to have failed in governing the country.
Explanation:In Nigeria, military interventions were mainly caused by the belief that civilian politicians were not capable of running the state effectively.
Such problems included political crises, corruption, and poor management of national affairs.
Under these conditions, the military stepped in by force and removed the civil government.
This action was, therefore, a response to the perceived failure of civilian rule.
Answer:Option A: perceived incapability of civilians to govern.