This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and Family Planning, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following is barrier contraception? \nSelect and explain. \nA. Male sterilization, B. Female sterilization, C. Spermicidal jelly, D. Natural', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: c (Spermicidal jelly) Ref: Park, 19th ed, p. 393The aim of barrier method is to prevent live sperm from meeting the ovum. It includes:Physical methods:a) Condomb) Female condomc) Diaphragmd) Vaginal spongeChemical methods: (Spermicidal)Foams, creams, jellies, suppositories, soluble filmsCombined methods:Condom is the most widely used barrier device by the males around the world. It can be highly effective method of contraception if used correctly. An important advantage is that it protects against STDs also.Sterilization is the permanent method of contraception.', 'role': 'assistant'}]