Answer:
d. 171
Explanation:
According to ERG which stands for Emergency Response Guidebook, a guidebook for first responders to dangerous or hazardous goods and materials at the initial stage, particularly in the incidents or activities relating to transportation of these dangerous or hazardous materials.
It is a guide book for Mexico, Canada and USA, response officials.
Hence, in this case, in accordance to the ERG, number 171 is assigned to White Asbestos, due to its low to moderate hazardous nature, of which it includes fire or explosion and health hazards.