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.
--------
Question: Question: J. C, 85 years old, has a history of osteoporosis. A potential complication is fragility fracture, highlighting that: 
 Options:  <0> A significant proportion of vertebral fractures are asymptomatic. <1> The Colles fracture is rare in people older than 65 years. <2> Fractures of the proximal third of the pertrochanteric femur are the less frequent fractures of the hip. <3> Half of the elderly who have a fall suffer a hip fracture. <4> The treatment of a proximal fracture of the femur will always be the prosthetic replacement.

Answer: nursery


Question: Question: What is the purpose of the phthalyl group in phthalisulfatiazole ?: 
 Options:  <0> Improve intestinal absorption. <1> Prevent intestinal absorption. <2> Improve the passage through the blood-brain barrier. <3> Prevent passage through the blood-brain barrier. <4> Increase the affinity towards the therapeutic target of the drug.

Answer: pharmacology


Question: Question: Epidemiology allows early detection of changes in the incidence of a certain disease in the population. For this, the most correct thing is to use: 
 Options:  <0> The etiological investigation. <1> The description of the natural history of the disease. <2> Epidemiological surveillance. <3> The evaluation of the functioning of the services. <4> None of the previous answers is correct.

Answer:
nursery