The correct options are
A PVC
B Teflon
D Nylon
Thermoplastic polymers are polymers in which the intermolecular forces of attraction are in between those of elastomers and fibres. These polymers are capable of softening on heating and hardening on cooling. Among the given options PVC, teflon, and nylon are thermoplastic polymers.
Bakelite is a thermosetting polymer. Thermosetting polymers are those which become irreversibly rigid on heating.