The correct option is C Seed hair
Cotton, genus Gossypium in the mallow family Malvaceae, provides cellulosic fibre. It is a soft,
fluffy fibre that grows in a boll, or protective case, around the seeds of the
cotton plants i.e hairs borne on the seeds, where each fibre consists of a single, long, narrow
cell.
So,
the correct answer is option B.