The outer packaging is the same type as listed on the accompanying dangerous goods transport document, and is permitted by the applicable packing instruction.

• A. The outer packaging is the same type as listed on the accompanying dangerous goods transport document, and is permitted by the applicable packing instruction
• B. The outer packaging must be labeled with the carrier's name
• C. The outer packaging must be reusable
• D. The outer packaging must have a tamper-evident seal

Answer: (A)

Matching the outer packaging to what is listed on the dangerous goods transport document and ensuring it is permitted by the packing instruction is the key rule here. The packing instruction defines which outer packaging types are approved and the tests they must pass for a given dangerous good. The transport document records the exact packaging type that is approved for that shipment. Using the same type ensures the packaging provides the required level of protection and that the shipment remains compliant with the regulations. If a different outer packaging were used, it might not have been tested for the contents or might not meet the specified performance standards, creating safety and regulatory risks. Labels for a carrier’s name, a requirement to be reusable, or a tamper-evident seal are not universal obligations for every dangerous goods shipment; they may apply in specific cases, but the general rule described here is about matching the packaging type to the document and packing instruction.