You are transporting Class 4 Flammable Solids. If they are smoldering, you should:

Do not open smoldering packages. Section 9.7.4 (Class 4 & 5): Do not open smoldering packages of flammable solids.

You are transporting Class 4 Flammable Solids. If they are smoldering, you should:

ANSWER BREAKDOWN
  • A. Incorrect. "Open the packages to cool them down" is not correct. Section 9.7.4 (Class 4 & 5): Do not open smoldering packages of flammable solids.
  • B. Correct. Section 9.7.4 (Class 4 & 5): Do not open smoldering packages of flammable solids.
  • C. Incorrect. "Throw water inside the package" is not correct. Section 9.7.4 (Class 4 & 5): Do not open smoldering packages of flammable solids.
  • D. Incorrect. "Blow on them" is not correct. Section 9.7.4 (Class 4 & 5): Do not open smoldering packages of flammable solids.