Concept:The birth of Nigeria refers to the formal amalgamation of its northern and southern protectorates into one political entity.Explanation:On January 1, 1914, Lord Frederick Lugard signed an agreement merging the Northern Nigeria Protectorate with the Colony and Protectorate of Southern Nigeria.This merger created the Colony and Protectorate of Nigeria.So, Nigeria was birthed as a single country in 1914.Although Nigeria gained independence in 1960, that event is not what the question describes as the birth.Answer:C. 1914