Final answer:
RNA carries DNA instructions outside the nucleus for protein synthesis.
Step-by-step explanation:
The issue of DNA being located in the nucleus and unable to leave is solved by a process called transcription. Another type of nucleic acid called RNA (ribonucleic acid) is responsible for carrying the information from DNA in the nucleus to a ribosome in the cytoplasm, where protein synthesis occurs. This process allows the instructions in DNA to be transmitted outside the nucleus for protein production.