The correct option is B Acrylic: Toothbrush bristles
∙ Acrylic is also called artificial wool and is used to make winter-wear like sweaters.
∙ Toothbrush bristles are usually made up of nylon.
∙ Polyester is a synthetic fibre which is durable, easy to wash, wrinkle-resistant and dries off quickly. Therefore, it is widely used in making dry-fit sportswear.
∙ Nylon can be used to make socks. Nylon socks let air through, allowing the skin to breathe.
∙ Rayon is mixed with wool to make carpets.