cyanide.
C) Mercury
Based on median lethal dose (LD50), Botulinum toxin is the most toxic to humans among
the substances listed. Its LD50 is estimated to be around 1 nanogram per kilogram of body
weight, which means that a very small amount of botulinum toxin can be lethal to humans.
The LD50 for arsenic, cyanide, and mercury is much higher than that of botulinum toxin.
WizardLM- Empowering Large Language Models to Follow Complex Instructions