The correct option is D Euphorbiaceae
The castor oil plant (Ricinus communis) is a species of flowering plant in the spurge family, Euphorbiaceae. It belongs to a monotypic genus, Ricinus and subtribe, Ricininae. The evolution of castor and its relation to other species are currently being studied using modern genetic tools. Castor seed is the source of castor oil, which has a wide variety of uses. The seeds contain between 40% and 60% oil that is rich in triglycerides, mainly ricinolein. Thus, option D is correct.