This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'Nuk Sauger Nipple has been designed to prevent the problem of: \nSelect and explain. \nA. Thumb sucking, B. Mouth breathing, C. Maxillary proclination, D. Bruxism', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Children who have the\xa0habit of thumb sucking derive the pleasure from keeping their ﬁnger/thumb at\xa0various depths of mouth.\xa0\nInitially, they start this at conscious level and soon it goes to the subconscious level.\xa0\nIf it is not intervened, it will alter the muscle balance and might cause malocclusion.\xa0\nAlong with this, it also alters the way the child sucks the nipple.', 'role': 'assistant'}]