Transcription is the process that occurs in the nucleus of a cell where the DNA sequence is copied into messenger RNA (mRNA). During this process, the enzyme RNA polymerase binds to the DNA and synthesizes a single strand of mRNA based on the complementary DNA template. This mRNA then exits the nucleus and travels to the ribosomes in the cytoplasm, where it undergoes translation. Translation is the subsequent process where the mRNA is read by ribosomes to synthesize proteins. Therefore, transcription is the correct answer as it specifically involves the reading of DNA to create mRNA.