Concept:Crossing two pure lines of the same species combines their traits to produce a hybrid.Explanation:The two pure lines are true-breeding parents with distinct, stable characteristics.When they are crossed, the offspring receive genes from both parents.This process is not inbreeding, because inbreeding involves mating closely related individuals.It is also not selection, as selection means choosing plants with desirable traits.Crossing two pure lines of the same species is specifically called hybridization.Answer:C. hybridization