Which of the following strategies is used to manage hazardous spills through physical barriers?

The strategy of diking is employed to manage hazardous spills by creating physical barriers that contain the spill and prevent it from spreading further. This method typically involves constructing a barrier or a temporary wall made of materials like earth, logs, or sandbags around the area where the hazardous substance has been released. The primary goal of diking is to protect the surrounding environment and minimize the potential impact of the spilled material, allowing responders to manage the situation more effectively.

In contrast to other options, dilution pertains to reducing the concentration of hazardous materials by mixing them with water or other substances, which may not be effective or safe for all types of spills. Dispersal refers to breaking up or spreading the hazardous material over a larger area, which can potentially increase the contamination risk and complicate clean-up efforts. Transfer involves moving the hazardous material from one location to another, which can pose risks if not done safely and correctly. Thus, diking stands out as a direct and immediate method to contain and manage spills effectively.