Chikusetsu saponin is a compound found primarily in Ginseng. It is one of the active components responsible for the medicinal effects of Ginseng, such as its adaptogenic and anti-fatigue properties.
Chikusetsu saponin is a bioactive compound found in ginseng. While senega contains senegasaponins, quillia contains quillaic acid saponins, and liquorice contains glycyrrhizin, none of these specifically contain chikusetsu saponin.
Thus, the correct answer is (C) Ginseng.