Final answer:
The region at which the RNA polymerase binds is the promoter region. It is a sequence of nucleotides located at the beginning of a gene and acts as a binding site for RNA polymerase and other transcription factors to initiate the process of transcription.
Step-by-step explanation:
The region at which the RNA polymerase binds is the promoter region. The promoter is a sequence of nucleotides located at the beginning of a gene which triggers the start of transcription. It acts as a binding site for RNA polymerase and other transcription factors to initiate the process of transcription.