use the CPI formula ((current year - prior year) ÷ prior year) and multiply by the weighting, you should get food = 3%, health = 3%, housing = 3.75% and clothing = 4% so the answer is D
im predicting renewal/end bc its been a few years, otherwise no idea. maybe something from the key features like the arms race, superpower relations/policies/strategies, or the impact of ideology