Final answer:
Radioactive material in a metal drum typifies Type A packaging, used for responsibly transporting low-level radioactive materials with proper regulations to prevent contamination.
Step-by-step explanation:
Radioactive material contained in a metal drum is an example of Type A packaging. This classification refers to packaging that is used to safely transport low-level radioactive materials, such as contaminated tools, protective clothing, and wiping cloths from nuclear fuel processing facilities and power plants.
These items are regulated to ensure that they do not come into contact with the external environment and are safely managed to prevent any radioactive contamination. Type A packages are designed to withstand normal transportation conditions without releasing their contents.