The 'truth drug' scopolamine which was used extensively in the World War II, is obtained from
Scopolamine, an anticholinergic medicine is one of the secondary metabolites of plants from Solanaceae (nightshade) family of plants, such as henbane, jimson weed (Datura), angel's trumpets (Brugmansia) and corkwood (Duboisia), used to relieve nausea, vomiting and dizziness associated with motion sickness and recovery from anaesthesia and surgery. Scopolamine may also be used in the treatment of parkinsonism, spastic muscle states, irritable bowel syndrome, diverticulitis, and other conditions. It has many effects in the body including decreasing the secretion of fluids, slowing the stomach and intestines and dilation of the pupils.
So, the correct answer is option C