Option 1 - wrong Thermoplatics can be repeatedly remoulded. Recycling is one of the major advantage of thermoplastics. Option 2 - correct Epoxy resin thermosetting polymer having Tg(glass transition temperature) above the room temperature. So it is brittle in nature. It is also glassy. There are different kinds of epoxy resins, most of the epoxy resins have Tg close to 107c Option 3 - wrong Rubber mainly have covalent bonds with some van der Waal's bonding Option 4 - correct Thermoplatics polymers have both amorphous and crystalline regions. So the answer will be option(C) 2 and 4