Final answer:
Gene expression involves transcription, where a gene's DNA sequence is copied into mRNA. This mRNA is then used as a template for translation, resulting in the production of a functional protein. Correct option is E.
Step-by-step explanation:
Gene expression involves the process of transcription, where a gene's DNA sequence is copied into messenger RNA (mRNA). This mRNA then undergoes translation, where it is used as a template to link specific amino acids in the correct order, ultimately producing a functional protein. Therefore, the correct option is E) production of a functional RNA via transcription.