The correct option is
C Obligate anaerobe
Clostridium botulinum is a Gram-positive, rod-shaped, obligate anaerobic bacterium. It produces the neurotoxin botulinum. It causes Botulism diseases. It is a serious disease that results in the flaccid paralysis of muscles. The other symptoms of disease include difficulty swallowing and speaking, d
ry mouth, blurred vision, difficulty breathing, nausea, vomiting, abdominal cramps, etc.Thus, the correct answer is 'Obligate anaerobe.'