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
Nuk Sauger Nipple has been designed to prevent the problem of: 
Select and explain. 
A. Thumb sucking, B. Mouth breathing, C. Maxillary proclination, D. Bruxism
A: Thumb sucking
Answer: A: Thumb sucking 
Explanation: Children who have the habit of thumb sucking derive the pleasure from keeping their ﬁnger/thumb at various depths of mouth. 
Initially, they start this at conscious level and soon it goes to the subconscious level. 
If it is not intervened, it will alter the muscle balance and might cause malocclusion. 
Along with this, it also alters the way the child sucks the nipple.