Answer:
A polysome is a big structure made up of several copies of the macromolecular complexes that carry out protein synthesis translating an mRNA molecule. A polysome is a complex produced when several ribosomes simultaneously translate a single mRNA molecule. This enables quick and effective protein synthesis. Each ribosome adds amino acids to the growing polypeptide chain as it grows along the mRNA molecule. Prokaryotes and eukaryotes both often have polysomes, which are crucial for the production of a lot of protein.
A, B, C, and E are incorrect options. A membrane-bound organelle called a lysosome is involved in the breakdown of cellular waste. A huge protein complex called a proteosome is used to break down unwanted or damaged proteins. Also, the term "syntosome" is not that known in biology.