Final answer:
The promoter sequence of the gene is recognized by RNA polymerase, which is responsible for initiating transcription. Transcription factors recognize the promoter where RNA polymerase binds to start transcribing RNA. Hence, the answer is B) RNA polymerase.
Step-by-step explanation:
The promoter sequence of the gene is recognized by RNA polymerase, which initiates transcription. A promoter is a specific sequence of DNA nucleotides that transcription factors recognize. Once these factors have bound, RNA polymerase II binds to form the transcription initiation complex.
In eukaryotes, the transcription initiation complex assembly begins with the typical eukaryotic promoter for a protein-encoding gene, which contains a TATA box DNA sequence motif. TATA-binding protein (TBP) first binds to the TATA box along with TFIID (transcription initiation factor IID). Subsequently, RNA polymerase binds more tightly forming an 'open complex' and initiates transcription.
Therefore, the correct answer to the question is B) RNA polymerase, as this is the enzyme responsible for recognizing the promoter DNA sequence and initiating the transcription of RNA from the DNA template.