Final answer:
Clostridium botulinum produces a neurotoxin that causes botulism, leading to flaccid paralysis and potentially being fatal without prompt treatment.
Step-by-step explanation:
The organism that produces a neurotoxin is Clostridium botulinum. This bacterium is the causative agent behind the potentially fatal condition known as botulism, characterized by flaccid paralysis. It produces botulinum neurotoxin, which inhibits the release of the neurotransmitter acetylcholine at the neuromuscular junctions. Clostridium botulinum endospores can survive in non-acidic canned foods, homemade pickles, and processed meats if these are not properly sterilized. The early diagnosis and treatment of this infection is critical, involving antibiotics to control the bacterial infection and antitoxins to neutralize the neurotoxin.