The correct option is A Teflon
Teflon is fully fluorinated polymer. Its monomer is tetrafluoroethylene, F2C=CF2
Neoprene is made of monomer chloroprene
(2−Chlorobuta−1,3−diene).
Neoprene is
⎡⎢⎣−CH2−C|Cl=CH−CH2−⎤⎥⎦n
Triokol is an organic polysulphide polymer.
PVC is polyvinyl chloride. Its monomer is vinyl chloride.
PVC - ⎡⎢⎣−CH2−CH|Cl−⎤⎥⎦n