Correct Answer: C

Rationale: In cases of exstrophy of the bladder, a moist sterile dressing is the most appropriate choice to protect the exposed bladder tissue. Moist sterile dressings help maintain a clean environment, prevent infection, and promote healing. A loose diaper (Choice A) may not provide adequate protection and may lead to contamination. Dry gauze dressing (Choice B) could adhere to the wound and cause trauma upon removal. Petroleum jelly gauze pad (Choice D) is not ideal as it may not provide the necessary barrier against infection and could potentially cause irritation.

Correct Answer: C

Rationale: The most appropriate nursing diagnosis for a child with acute glomerulonephritis is fluid volume excess related to decreased plasma filtration. Acute glomerulonephritis is characterized by inflammation of the glomeruli in the kidneys, leading to decreased plasma filtration and retention of fluid. This results in fluid volume excess rather than fluid deficit (choice B) or fluid accumulation in tissues and third spaces (choice D). The diagnosis of 'risk for injury related to malignant process and treatment' (choice A) is not directly related to the pathophysiology of acute glomerulonephritis.

Correct Answer: D

Rationale: Poor wound healing is a common clinical manifestation of type 1 diabetes mellitus. High blood glucose levels in diabetes can impair the body's ability to heal wounds effectively. Choices A, B, and C are incorrect. Moist skin is not a typical clinical manifestation of type 1 diabetes; instead, skin may become dry due to dehydration. Weight gain is unlikely as type 1 diabetes is characterized by weight loss. Fluid overload is also uncommon in type 1 diabetes, which is more commonly associated with dehydration due to frequent urination.

Correct Answer: A

Rationale: The correct answer is A. Most childhood cancers, such as leukemias and sarcomas, affect tissues rather than specific organs, unlike many adult cancers. Choice B is incorrect because childhood cancers may not always be localized when found. Choice C is incorrect as childhood cancers can be responsive to treatment, although treatment approaches may differ from adult cancers. Choice D is incorrect as the majority of childhood cancers cannot be prevented; however, certain risk factors can be managed to reduce the risk of developing cancer.

Correct Answer: C

Rationale: Infants receive passive immunity through antibodies from the mother during pregnancy and breastfeeding, which protect them initially.