In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
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Question: Question: Becker muscular dystrophy is an alteration of: 
 Options:  <0> The skeletal muscle. <1> The metabolism of lipids. <2> The bones. <3> Hepatic origin. <4> The bilirubin.

Answer: pharmacology


Question: Question: To control the expression of certain genes according to population density, bacteria use systems of: 
 Options:  <0> Strict response <1> Two components <2> Perception of the quorum. <3> Densitometric adaptation. <4> Negative activation

Answer: biology


Question: Question: From the following suggestions to the family about the school feeding for the prevention of obesity, indicate which is NOT recommended: 
 Options:  <0> Avoid chewing gum (chewing gum), even without sugar, because it is customary to have a full mouth between meals. <1> Increase the intake of fresh foods, vegetables and fruits. <2> Eat as a family, accompanied, at least some main meal of the 5 recommended daily. <3> Chop between meals to avoid being hungry at main meals. Enriched juices are recommended. <4> Try not to eat watching television, because distraction prevents enjoy the food and know what you eat.

Answer:
nursery