Very recently, in which of the following countries have lakhs of people either suffered from severe famine/acute malnutrition or died due to starvation caused by war/ethnic conflicts?

Yemen and South Sudan are the correct choices because, during 2017–2018, both nations faced catastrophic humanitarian crises where prolonged civil wars and ethnic conflicts led to UN-declared famines and millions of deaths from starvation. Option (C) is the most tempting distractor, but Venezuela’s severe food shortages were primarily driven by economic collapse and hyperinflation rather than the specific "war or ethnic conflict" criteria defined in the question. This question tests a candidate's awareness of major global humanitarian disasters and the geopolitical triggers behind food insecurity.