Correct Answer: C

Rationale: Healthy People 2020 focuses on decreasing tobacco use, improving immunization rates, and increasing access to healthcare among its leading health indicators.

Correct Answer: B

Rationale: Family stress theory explains how families respond to stress and identifies factors that help families adapt to and manage stressful events effectively.

Correct Answer: C

Rationale: A low-phosphorus diet is recommended for children with chronic renal failure to prevent hyperphosphatemia, which can lead to bone disease and other complications. Phosphorus is found in many processed foods and should be limited. Choices A, B, and D are incorrect because high sodium intake can lead to fluid retention and hypertension, while Vitamin D supplementation and vitamins C, E, K are not specifically indicated for dietary recommendations in chronic renal failure.

Correct Answer: C

Rationale: For a conscious child with mild hypoglycemia, giving 15 grams of fast-acting carbohydrates is the appropriate intervention. This can quickly raise blood glucose levels to prevent further complications. Administering insulin (Choice A) would further lower the glucose level, which is not suitable in this scenario. Administering epinephrine (Choice B) is not indicated for hypoglycemia. Glucagon (Choice D) is used for severe hypoglycemia with altered consciousness, not for mild cases where the child is awake and alert.

Correct Answer: A

Rationale: Preschool children are at higher risk for injury due to magical and egocentric thinking, which can lead to misjudgments about their abilities and dangers.