Which of the following is classified as a confinement tactic?

Confinement tactics are methods used to contain and control hazardous materials during an incident to prevent their spread. Diking is classified as a confinement tactic because it involves the creation of a barrier or structure around a hazardous material to prevent it from escaping, particularly in liquid form. This could involve building earthen barriers or using specialized equipment to ensure that the hazardous substance remains within a designated area, thereby reducing the risk of environmental contamination and exposure to personnel.

Patching and plugging typically refer to different techniques used to stop leaks or breaches in containers, while righting an overturned container pertains to the physical repositioning of a container that has tipped over. Although these methods can be essential in managing hazardous materials, they do not directly align with the definition of confinement tactics as they do not create a barrier to contain the material itself. Therefore, the choice of diking as a confinement tactic is accurate because it directly addresses the need to prevent the spread of hazardous substances.