Answer: B.To form RNA molecules from DNA
Explanation: Transcription is a process of copying the genetic messages contained in a DNA into an RNA molecule. The purpose of this is to produce different RNA molecules needed for bodily functions. Basically three types of different RNAs can be produced from DNAs: messenger RNA (mRNA), transfer RNA (tRNA) and ribosomal RNA. Messenger RNA contains the genetic information for making proteins, transfer RNA fetches and attaches the correct amino acid during protein synthesis.