Concept:Cement industry location is strongly tied to the availability of its main raw material, limestone.Explanation:Ewekoro in Nigeria has large deposits of limestone, which is the major raw material for cement production.Because limestone is bulky and expensive to transport, cement factories are often located near the source of the raw material.Therefore, the location of the cement industry in Ewekoro is largely influenced by nearness to raw materials.Answer:C. nearness to raw materials