Concept:Lumbering requires dense forests and a good supply of timber trees.Explanation:Lumbering is the cutting and processing of trees for timber and wood products.This activity is important mainly in areas with large forest cover.Libya, Namibia, and Algeria are mostly desert or arid countries with little forest vegetation.Liberia is located in West Africa and has extensive tropical rainforests.These rainforests provide abundant timber, making lumbering a major economic activity in Liberia.Answer:C. Liberia