The correct option is B basal, bulged
Gynoecium is the female reproductive part of the flower. It consists of either one or many pistils.
Each pistil has three parts: stigma, style and ovary.
The stigma is at the top and it receives pollen. The pollen grains germinate on stigma.
The stigma is followed by a long slender style which bulges at the base to form an ovary. Owing to this position and shape of the ovary it is called basal and bulged.