Question

rubber, plastic, mylar, ceramic, teflon and polystyrene are all good

Explanation:

These materials (rubber, plastic, Mylar, ceramic, Teflon, polystyrene) have high resistance to the flow of electric current, which is the characteristic of insulators. Conductors allow easy flow of electric current (e.g., metals), and semiconductors have properties between conductors and insulators (e.g., silicon).

Answer:

insulators