The correct option is A Polysome
A polysome is a complex which is formed during protein synthesis, it consists of many ribosomes which are attached to a single strand of mRNA molecule.
A polymer is a large molecule which are formed by linking repeating subunits.
Polypeptide are the long chains of amino acids.
Okazaki fragments are short sequence of DNA nucleotides which are synthesised discontinuously during DNA replication.