Correct Answer: B

Rationale: The correct answer is B: Currant-jelly stool. This type of stool, which is red and mucous-like, is a classic sign of intussusception in infants. Choice A (Soft, seedy stool) is incorrect as it does not specifically describe the characteristic stool associated with intussusception. Choice C (Ribbon-like stool) is incorrect; ribbon-like stool may be seen in conditions like colon cancer, not intussusception. Choice D (Soft and pasty stool) is also incorrect as it does not match the typical stool finding in intussusception.

Correct Answer: B

Rationale: Developmental theory outlines the series of tasks and stages that a family goes through over its life span, helping to understand the family's development and needs over time.

Correct Answer: D

Rationale: The correct nursing action to minimize the stress of the child and family is giving a tour of the hospital unit or surgical area. Familiarizing them with the hospital environment can help reduce their anxiety by allowing them to see where the child will be staying and the surroundings. Choices A, B, and C do not directly address the need to reduce stress by providing a tangible way to alleviate anxiety through exposure to the hospital setting.

Correct Answer: A

Rationale: Adolescents typically identify and relate more closely to their peer group, especially during the teenage years when peer relationships become a central focus.

Correct Answer: C

Rationale: The correct answer is C: Acute renal failure in children is often reversible, especially when the underlying cause is identified and treated promptly. It does not always lead to chronic renal failure or the need for a kidney transplant. Choice A is incorrect as prophylactic antibiotics for life are not a standard treatment for acute renal failure. Choice B is incorrect as acute renal failure does not always progress to chronic renal failure. Choice D is incorrect as not all children with acute renal failure will eventually require a kidney transplant.