Final answer:
Filled storage drums should not be towed over 15 mph for safety reasons, which makes the correct answer A) 10 mph from the choices given.
Step-by-step explanation:
When it comes to handling drums, especially those that are filled and may contain hazardous or heavy materials, safety is paramount. According to the best practices in industrial and workplace safety, filled storage drums should not be towed over 15 mph. This speed limit is set to prevent accidents that could happen due to the drums' potentially shifting weight, which may lead to tipping, falling off the towing mechanism, or causing an unsafe situation for both the operator and others in the vicinity. This information aligns with general safety guidelines in industrial environments, as high speeds can increase the likelihood of accidents due to less control over the movement of the drums. Therefore, the safest answer from the provided choices would be A) 10 mph, as it is the only speed that is below the recommended threshold.