Correct Answer: B

Rationale: The correct answer is 'Disease prevention.' Modern healthcare places emphasis on preventing diseases to enhance overall health and well-being. While nursing services, symptom management, and disease identification are crucial components of healthcare, disease prevention plays a key role in reducing the burden of illness on individuals and communities.

Correct Answer: A

Rationale: Adapting ethnic practices to health needs respects the patient's cultural background while ensuring that care is effective and culturally sensitive.

Correct Answer: B

Rationale: Pyloric stenosis is caused by the hypertrophy (thickening) of the circular muscle of the pylorus, leading to obstruction. Choice A is incorrect as it describes intussusception, not pyloric stenosis. Choice C is incorrect as a relaxed cardiac sphincter is related to gastroesophageal reflux. Choice D is incorrect as it describes Hirschsprung's disease, not pyloric stenosis.

Correct Answer: C

Rationale: In Hispanic culture, the balance between hot and cold is important, and the parent may be giving the child broth to restore this balance while avoiding "cold" foods.

Correct Answer: B

Rationale: The correct answer is B: 'Occurs after a streptococcal infection.' Acute postinfectious glomerulonephritis often occurs after an infection with certain strains of streptococcus bacteria, specifically group A streptococcus. The body's immune response to the infection leads to inflammation and damage in the kidneys. Choices A, C, and D are incorrect because acute postinfectious glomerulonephritis is primarily associated with streptococcal infections, not urinary tract infections, renal vascular disorders, or E. coli.