What essential items must decontamination supplies include?

The essential items that decontamination supplies must include are water, soap, and towels. Water is crucial for rinsing away contaminants from the skin or surfaces. It helps to dilute and remove harmful substances effectively. Soap plays a vital role in breaking down oils and residues, enhancing the cleaning process by ensuring that dirt and contaminants are lifted away from the skin. Finally, having towels is important for drying the area after decontamination, as they can help absorb any remaining moisture and contaminants, ensuring a complete cleaning process.

While other combinations of items listed in the question include some necessary elements, they do not provide a comprehensive set of supplies needed for thorough decontamination. For instance, using only water and towels does not include soap, which is essential for effective cleaning. Similarly, combinations that omit either water or towels would not fulfill the requirements of a complete decontamination protocol.