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: The most appropriate microscopy to identify Treponema pallidum in exudates from syphilitic lesions is: 
 Options:  <0> Clear field without staining. <1> Clear field with simple staining. <2> Dark field <3> Phase contrast. <4> Polarized light
biology

Question: Regarding gastroesophageal reflux disease, which of the following statements is true? 
 Options:  <0> The intensity and frequency of heartburn has little relationship with the presence and severity of endoscopic esophagitis. <1> Most patients with gastroesophageal reflux disease have esophagitis at endoscopy. <2> Treatment with proton pump inhibitors usually achieves good control of symptoms but is not superior to placebo in the endoscopic cure of esophagitis. <3> Barrett's esophagus can progress to low-grade epithelial dysplasia, high-grade epithelial dysplasia, and finally squamous cell carcinoma of the esophagus. <4> Endoscopic screening and surveillance programs have unequivocally shown to be able to reduce mortality in patients with Barrett's esophagus.
medicine

Question: Which procedure is NOT part of the cognitive-behavioral intervention program for body dysmorphic disorder of Rosen et al ?: 
 Options:  <0> Psychoeducation <1> Exposition. <2> Training in problem solving. <3> Cognitive restructuring. <4> Response prevention.

psychology