The correct option is C Inferior ovary
Ray florets are the small and usually strap-shaped peripheral flowers found in the family Asteraceae. Ray florets have inferior ovary and the reason is that the other parts of the flower are attached above the level of ovary. If the ovary is fused with the thalamus so that the floral parts such as sepals, petals arise from its top, then the condition of the ovary is said to inferior. Example of such an ovary is ray florets of sunflower.