Which of the Following Organisms Produces a Neurotoxin, the Most

Multiple Choice

Which of the following organisms produces a neurotoxin, the most poisonous natural substance known, which causes dry mouth, dilated pupils, and a progressive muscle weakness that leads to respiratory failure and death?

A) Bacillus anthracis
B) Clostridium botulinum
C) Francisella tularensis
D) Variola major