The correct option is C Hypanthodium
Hypanthodium - In this type of inflorescence the receptacle becomes spherical with a cavity inside. It opens to the outside with a small opening. Numerous small sessile flowers are produced from the inner surface of the receptacle. These flowers are of three types: male flowers, female flowers and sterile female flowers (gall flowers) e.g., Ficus. Cyathium and catkin are absent in ficus.
Therefore, the correct answer is option D.