Concept:Nationalization was used by Nigeria to punish foreign companies that dealt with apartheid South Africa.Explanation:In the late 1970s, Nigeria opposed South Africa’s apartheid policy.The British Petroleum Company was nationalized in 1978.Barclays Bank was also nationalized in 1978 because it continued transacting business with South Africa.These actions were deliberate economic sanctions against companies supporting South Africa.Therefore, the correct option is South Africa.Answer:South Africa (Option B).