Correct Answer: C

Rationale: The correct answer is C: reduced rates of childhood obesity. A reduction in childhood obesity rates is a direct indicator that the program is successful in achieving its goal. Increased participation in physical activities (choice A) and higher attendance at nutrition education sessions (choice B) are positive outcomes, but they do not directly measure the program's effectiveness in reducing obesity. Greater knowledge of healthy eating habits (choice D) is important but does not guarantee a decrease in obesity rates. Therefore, the most significant outcome to determine the success of a childhood obesity reduction program is a reduction in obesity rates.

Correct Answer: A

Rationale: The correct answer is A. A hemoglobin level of 12 g/dL is an indicator of effective erythropoietin therapy as it shows an increase in red blood cell production. Reticulocyte count (choice B) reflects the bone marrow's response to anemia but does not directly confirm the effectiveness of erythropoietin therapy. Blood pressure (choice C) and serum ferritin level (choice D) are not specific indicators of the effectiveness of erythropoietin therapy for chronic kidney disease.

Correct Answer: A

Rationale: The nurse has applied primary prevention in this situation. Primary prevention involves efforts to prevent the occurrence of domestic violence before it starts, even if the client does not admit to the abuse. Secondary prevention focuses on early detection and intervention to reduce the harm caused by violence that is already occurring. Tertiary prevention involves actions taken to rehabilitate and support individuals who have experienced domestic violence. Health promotion encompasses a broader approach aimed at improving overall health and well-being, which may include education on domestic violence prevention but is not specific to this scenario.

Correct Answer: D

Rationale: The drainage of clear, pale yellow fluid from the chest tube is an indication of proper chest tube functioning. Clear, pale yellow fluid signifies normal drainage from the pleural space without any signs of infection or complications. Choices A, B, and C are incorrect because continuous bubbling in the water-seal chamber, no fluctuation in the water-seal chamber, and intermittent bubbling in the suction control chamber are all indications of potential issues or malfunctioning of the chest tube system, which would require further assessment and intervention.

Correct Answer: A

Rationale: The correct answer is A: Infection is acquired when anthrax spores enter a host. Anthrax is primarily transmitted through spores entering the body, either through the skin, inhalation, or ingestion. Person-to-person transmission of anthrax is extremely rare and not a significant mode of transmission. Choices B and C are incorrect because mature anthrax bacteria do not live dormant on inanimate objects, and spores can survive for extended periods outside a living host. Choice D is incorrect as anthrax is not transmitted by respiratory droplets from person to person.