Final answer:
In most work or lab situations, transmission is most likely to occur due to inhalation of airborne particles.
Step-by-step explanation:
In most work or lab situations, transmission is most likely to occur due to inhalation of airborne particles. Common airborne pathogens, such as flu and cold viruses, are spread when droplets are expelled from an infected person's respiratory system during coughing or sneezing, and then inhaled by nearby people who become new hosts for the pathogens.