The correct answer is A. Pistils.
Pistils are the female reproductive organs of a flower. They are typically located at the center of the flower and consist of a stigma, style, and ovary. The stigma is the sticky part of the pistil that receives pollen from the stamen. The style is the tube that connects the stigma to the ovary. The ovary is the part of the pistil that contains the ovules, which are the female reproductive cells.
Sepals, stamens, and petals are all part of the flower’s reproductive system, but they are not the innermost parts of the flower. Sepals are the green, leaf-like structures that surround the petals. Stamens are the male reproductive organs of a flower. They consist of a filament and an anther. The filament is the stalk that supports the anther. The anther is the part of the stamen that produces pollen. Petals are the colorful, showy parts of a flower. They attract pollinators, such as bees and butterflies, which help to transfer pollen from one flower to another.
Here is a diagram of a flower that shows the different parts of the flower:
The innermost part of the flower is the pistil. The pistil is made up of the stigma, style, and ovary. The stigma is the sticky part of the pistil that receives pollen from the stamen. The style is the tube that connects the stigma to the ovary. The ovary is the part of the pistil that contains the ovules, which are the female reproductive cells.