What type of techniques are diversion, diking, and retention?

The chosen answer reflects the concept of confinement techniques used in hazardous materials response. Diversion, diking, and retention are methods aimed at containing hazardous substances to prevent them from spreading and causing further contamination or environmental damage.

Diversion involves redirecting flow away from sensitive areas, while diking entails creating physical barriers, such as earth or sand barriers, to contain spills or leaks. Retention focuses on collecting and holding hazardous materials in a confined space, such as a tank or a retention pond. By employing these techniques, responders can effectively manage a spill or leak, reducing the risk to people and the environment.

The other choices pertain to different methods of managing hazardous materials. Absorption involves soaking up liquids using materials that capture and contain them, while neutralization refers to chemical processes that convert hazardous substances into less harmful ones. Disposal relates to the final removal of hazardous materials from a site, which does not directly engage with the immediate containment of the substance as confinement techniques do.