The correct option is D Acrylic
Fibres obtained through chemical processes are called artificial or synthetic fibres.
Examples: Acrylic, polyester, nylon.
Fibres obtained from plants and animals are called natural fibres.
Examples:
∙ Cotton - Obtained from fruits of cotton plant.
∙ Wool - Obtained from the fleece of yak, sheep and goat.
∙ Silk - Obtained from the cocoons of silkworms.