The correct option is B Pistil
The female reproductive part of a flower is called pistil. It has 3 parts- stigma, style and ovary. The ovary contains the female sex cells or ovules.
Sepals and petals are not involved in reproduction. Sepals are green in colour and help in the protection of flower during its bud stage, whereas petals are generally brightly coloured and attract insects. Bud blooms to form a flower.