The correct option is B Cotton
Cotton is a soft, fluffy staple fibre that grows in a boll or protective capsule, around the seeds of cotton plants of the genus Gossypium in the family of Malvaceae. The fibre is almost pure cellulose. Under natural conditions, the cotton bolls will tend to increase the dispersion of the seeds. Cotton is a seed hair fibre produced from epidermal seed coat. Flax fibres are taken from the stem of the plant and are two to three times as strong as those of cotton. Sunn hemp is a bast fibre. Manila hemp fibres are obtained from leaf and stems.
Thus, the correct answer is option B.