One consequence of not following hazardous material regulations is:

Choosing legal actions and fines as a consequence of not following hazardous material regulations is correct because compliance with these regulations is mandatory for the safe transportation of potentially dangerous goods. Failure to adhere to these laws can result in enforcement actions from regulatory agencies, which often include penalties, fines, and even criminal charges for significant violations. These repercussions serve as a deterrent for organizations that might otherwise neglect their responsibilities regarding safety and environmental protection.

On the other hand, decreased product demand, improved transport efficiency, and increased shipment sizes do not directly relate to the consequences of failing to comply with hazardous material regulations. While it is possible that non-compliance could affect product demand negatively when customers lose trust due to safety concerns, this outcome is not a direct consequence of regulatory failures in the same way that legal repercussions are. Improved transport efficiency and increased shipment sizes are not typical outcomes of failing to follow hazardous materials regulations and are usually tied to compliance and effective practices instead.