Final answer:
A.)Ribosomes are responsible for joining monomers during translation to create proteins, and the RNA components of ribosomes are synthesized in the nucleolus.
Step-by-step explanation:
The organelle responsible for joining monomers to create the organic compound that is produced during translation is the ribosome. Ribosomes are essential for protein synthesis, as they bind to messenger RNA (mRNA) and translate the code into a specific sequence of amino acids, forming a protein. The RNA components of ribosomes are synthesized in the nucleolus, and after being made, they are exported to the cytoplasm to direct protein synthesis.