Concept:The Nigerian civil service has several institutional weaknesses, but the most widely recognised major problem among the options is corruption.
Explanation:The civil service is expected to carry out government policies honestly and efficiently.
However, corruption has become a serious problem in the Nigerian civil service.
It appears in the form of bribery, embezzlement, forgery of records, and abuse of office.
These practices waste public funds, slow down service delivery, and reduce public trust in the government.
Although inadequate staff or weak leadership may exist, corruption is the most prominent and destructive challenge affecting the Nigerian civil service.
Answer:C. Corruption