Question

the mrna leaves the _________ to find the ribosome to make proteins. nucleus nucleotide cell mitochondrion

Explanation:

mRNA (messenger RNA) is synthesized in the nucleus during transcription. After synthesis, it needs to exit the nucleus to reach the ribosomes (which are located in the cytoplasm) for protein - synthesis (translation). A nucleotide is a building block of nucleic acids (like DNA and RNA), not a location. The cell is too broad a term as it is the overall structure, and the mitochondrion is the site of cellular respiration (not the origin point for mRNA to go to ribosomes).

Answer:

nucleus