What do the abbreviations DM, DA, and DC refer to?

The abbreviations DM, DA, and DC are associated with chemical agents, specifically Vomiting agents, commonly used in warfare to incapacitate rather than kill. DM refers to diphenylchlorarsine, DA stands for diphenylcyanoarsine, and DC is known as dichloroacetophenone, which is more commonly recognized as a tear or irritant agent. These agents are intended to cause temporary disruptions, allowing military forces to gain an advantage over an opponent.

Water purification agents and defensive measures, while important in military operations, do not fit the context of the specific abbreviations in question. Additionally, destruction methods don’t accurately describe the purpose or function related to DM, DA, and DC. Thus, the correct pairing is with Vomiting agents, emphasizing their role in non-lethal incapacitation strategies in military engagements.