Final answer:
Bacillus anthracis produces lethal factor, which is a component of the binary exotoxin responsible for the severe symptoms of anthrax.
Step-by-step explanation:
Bacillus anthracis produces lethal factor, which is a toxin that plays a major role in the pathogenesis of anthrax. Lethal factor is one of the components of the binary exotoxin produced by B. anthracis, along with protective antigen. When lethal factor and protective antigen combine, they form lethal toxin, which is responsible for the severe symptoms and high mortality rate associated with anthrax.