The monomer of polythene is ethane $\left( C _{2} H _{4}\right)$
The monomer of polystyrene is styrene $\left( C _{6} H _{5} CHCH _{2}\right)$
The monomer of neoprene is chloroprene $\left( CH _{2}= C ( Cl )- CH = CH _{2}\right)$
The monomer of Terylene is $1,4$ -benzene dicarboxylic acid and $1,2$ -ethanediol. Thus, it possesses intermolecular hydrogen bonding and has the strongest intermolecular forces among the given options.