Correct Answer: A

Rationale: The correct answer is A: Screening for early signs of disease. Secondary prevention involves activities that aim to detect health issues early to provide timely treatment. Screening for early signs of disease falls under secondary prevention as it helps identify diseases in their early stages, allowing for prompt intervention and management.

Correct Answer: B

Rationale: Health advocacy involves advocating for policies that positively impact health care access for all individuals. By working to change policies, a person promotes equitable access to necessary care and resources, which aligns with the principles of health advocacy.

Correct Answer: A

Rationale: When planning a health promotion program for a community, the health needs of the population should be considered first. Understanding the specific health needs of the community helps in designing a program that addresses relevant health issues and is tailored to be effective. By identifying the prevalent health concerns, the program can be targeted towards making a meaningful impact on the community's well-being.

Correct Answer: A

Rationale: Grouping and crossmatching is the procedure performed prior to a blood transfusion to determine the blood type and identify any potential incompatibilities between the donor and recipient. This process involves testing the recipient's blood for ABO and Rh antigens and crossmatching it with the donor's blood to ensure compatibility and prevent adverse reactions during the transfusion. Complete blood count, D-dimer test, and blood clotting test are other laboratory tests that serve different purposes and are not specifically done to detect incompatibilities prior to blood transfusion.

Correct Answer: A

Rationale: A community health nurse plays a vital role in promoting health by advocating for health policy changes. By advocating for policy changes that support healthy environments, access to care, and addressing social determinants of health, community health nurses work towards improving the overall health and well-being of the community they serve. While providing direct care to individuals and families, educating the community about healthy lifestyles, and conducting research on community health issues are important aspects of nursing practice, advocating for health policy changes has a broader impact on population health outcomes.