When designing unit loads, which of the following levels need to be considered? Select all that apply.

Designing unit loads requires a holistic approach, considering carriers (transport vehicles), sales units (individual sellable items), secondary unit loads (grouped items), shipping containers (for transport), and pallets (for stacking). The CIPS L3M6 syllabus stresses that effective unit load design integrates all these elements to ensure compatibility, efficiency, and safety across the supply chain, making "All the above" the correct answer.
Reference: CIPS L3M6 Socially Responsible Warehousing and Distribution, Learning Outcome 3 (LO3)
– Understand methods for the storage and movement of inventory. ________________________________________