Which of the following methods would most likely be used to disseminate biological warfare agents?

The aerosol method is the most likely means to disseminate biological warfare agents because it allows for the effective and efficient spread of microorganisms or toxins through the air. By converting biological agents into fine droplets, aerosols can be inhaled by individuals over a wide area, making it a powerful delivery mechanism for harmful agents. This method maximizes the potential for exposure, thereby increasing the effectiveness of the biological agent in a targeted area.

In contrast, while rockets, shells, and bombs could theoretically be used to deliver biological agents, they often rely on explosive force and may not effectively disperse the agents in a way that optimizes inhalation or contact. Aerosolization specifically enhances the distribution of pathogens or toxins in a manner that exploits the respiratory system, which is crucial for biological weapons designed to incapacitate or inflict harm on a population.