Correct Answer: B

Rationale: Advocating for policies that promote health equity is a crucial action for community health nurses to address health disparities. While providing health education, conducting assessments, and offering free screenings are important interventions, advocating for policies that promote health equity can have a broader and more sustainable impact on reducing health disparities within communities.

Correct Answer: A

Rationale: Hand hygiene is considered the most effective method for preventing the spread of diseases. Regular handwashing with soap and water for at least 20 seconds can help remove germs and reduce the risk of infections. While vaccination, quarantine, and the use of personal protective equipment are also important in disease control, hand hygiene is fundamental and easily accessible for everyone to practice in daily life.

Correct Answer: B

Rationale: A fundamental goal of public health is to address and eliminate health disparities among different populations, aiming to ensure that everyone has equal access to resources and opportunities for good health outcomes.

Correct Answer: D

Rationale: The aorta is not a vein; it is the main artery in the body that carries oxygenated blood from the heart to the rest of the body. In parenteral cannulation, major veins like the basilic vein, femoral vein, and subclavian vein are typically used for access. Therefore, the correct answer is the aorta, as it is an artery and not a vein used for cannulation.

Correct Answer: A

Rationale: Ringer's lactate is the preferred fluid for managing gastrointestinal tract (GIT) losses and burns due to its balanced electrolyte composition. It helps replace lost fluids and electrolytes, making it an ideal choice for resuscitation in such scenarios. Normal saline is commonly used for volume resuscitation but may not be the best choice for these specific conditions. Dextrose is a source of glucose and is not typically used as the primary fluid for GIT losses and burns. Blood transfusion is indicated for specific situations like severe hemorrhage or anemia but is not the primary fluid for GIT losses and burns.