Answer:
The correct answer would be "transcription".
Transcription is the process by which mRNA is synthesized by using one of the DNA strands as the template.
The whole process is catalyzed by the enzyme RNA polymerase.
It can be divided mainly into three steps:
Initiation: The DNA strands break apart and lead to the formation of the transcription bubble. The RNA polymerase enzyme forms the complex at the promoter region of template strand of the DNA.
Elongation: The RNA polymerase adds RNA nucleotides to the growing chain of the mRNA molecule based on the nucleotide sequence of the template strand.
Termination: RNA polymerase, associated proteins, and mRNA molecule dissociate from the DNA molecule.