[Solved] A lipid membrane is present in which of the following? A) prions B) viroids C) naked viruses D) enveloped viruses E) both prions and viroids Alternatives: Different options or strategies considered in decision-making processes or problem-solving situations. Sunk Costs: Costs that have already been incurred and cannot be recovered, and therefore should not factor into future decisions. Decision Making: Selecting a course of action from competing alternatives. Differential Cost Analysis: The process of comparing the cost differences between two business decisions in order to determine which is more financially viable.