Correct Answer: D

Rationale: Diabetes insipidus is caused by a disorder of the pituitary gland affecting ADH regulation. This disorder results in the decreased production or release of antidiuretic hormone (ADH), leading to the inability of the kidneys to concentrate urine properly. Choices A, B, and C are incorrect as they do not relate to the underlying cause of diabetes insipidus.

Correct Answer: D

Rationale: Diabetes insipidus is caused by a disorder of the pituitary gland affecting ADH regulation. This disorder results in the decreased production or release of antidiuretic hormone (ADH), leading to the inability of the kidneys to concentrate urine properly. Choices A, B, and C are incorrect as they do not relate to the underlying cause of diabetes insipidus.

Correct Answer: D

Rationale: The correct answer is D because adjuvant medications are often available over the counter without a prescription. Choices A, B, and C are incorrect. Choice A is incorrect because licensed practical nurses can administer adjuvant medications depending on their scope of practice. Choices B and C are incorrect because adjuvant medications are not classified as schedule 1 or schedule 2 narcotics.

Correct Answer: C

Rationale: The correct answer is C. Crohn's disease is characterized by noncontiguous, segmented involvement, meaning it can affect different areas with healthy tissue in between, while ulcerative colitis involves continuous areas of inflammation. Choices A, B, and D are incorrect because Crohn's disease can affect any part of the digestive tract from mouth to anus, can present with shallow ulcerations or deep fissures, and is transmural, meaning it affects the entire thickness of the bowel wall. On the other hand, ulcerative colitis typically affects the colon and rectum, presents with a continuous pattern of inflammation, and primarily involves the mucosal lining of the colon.

Correct Answer: D

Rationale: The correct answer is D: Psychosocial. Alcohol, caffeine, or drug use are considered psychosocial risk factors as they are related to individual behavior, lifestyle choices, and social interactions. Choices A, B, and C are incorrect. Social demographic factors (choice A) refer to characteristics of a population such as age, gender, education, income, etc. Environmental factors (choice B) include physical surroundings like air quality, housing conditions, etc. Biophysical factors (choice C) involve biological aspects like genetics, physiology, and health conditions.