Concept:Lumbering begins with tree selection before any cutting or felling takes place.Explanation:The first stage in lumbering is identifying suitable mature tree species in the forest.This selection ensures that only the right trees are harvested.After selection, trees are felled using tools like power saws.Only then are the felled trees cut into logs and transported.Therefore, identifying suitable species comes before all other steps.Answer:B. Suitable species are identified