Task: Text Categorization
Input (English): Question: Which of the following situations would noticeably decrease the transcription of a gene? 
 Options:  <0> The presence of a repressor and an inducing molecule. <1> The binding of RNA polymerase to DNA. <2> The presence of a repressor and a correpressor molecule. <3> The presence of an activator and its signal molecule. <4> The presence of a mutated repressor that could not bind to DNA.
Output (English): pharmacology