Correct Answer: Fibre glass

Solution : The correct option is Fibre glass.

The type of glass commonly used for making Glass Reinforced Plastic (GRP) is fibreglass. These are composite material made up of fine glass fibers embedded in a polymer matrix. The glass fibres provide strength and stiffness to the material, while the polymer (usually a type of resin like polyester, epoxy, or vinyl ester) serves as a binding agent that holds the fibers together and provides protection.