Task: Text Categorization
Input (English): Question: Botulinum toxin: 
 Options:  <0> It occurs in infected and poorly aerated wounds. <1> Blocks protein synthesis. <2> It blocks the secretion of acetylcholine in the myoneural plaque. <3> It interferes with nerve impulse transmission at the level of axons. <4> It causes necrosis of the nerve endings.
Output (English): biology