Answer/Explanation:
Cotton is a natural fiber. Cotton is grown from a shrub which is a plant. Any type of fiber derived by plants, animals, and other geological forms of materials.
Linen a natural cellulosic fiber because it reacts with other substances because of certain chemical properties
So, both cotton and linen are natural fibers.
Acetate fibers are a mixture of synthetic, natural, and artificial fibres.
You must know this because you have to know what to use when. I know it sounds dumb but you must use your skills at a time they are most needed and can most affect something or someone positively.