Question

when chemicals are transferred from their original containers, what must be done to the new container? clean thoroughly label its contents store away quickly none of the above

Explanation:

When transferring chemicals, labeling the new container is crucial for safety and identification. Cleaning might be needed but isn't always mandatory (e.g., if transferring to a clean, unused container). Storing quickly is a general practice but not specific to container - related action. Labeling directly addresses the container's requirement.

Answer:

Label its contents