Correct Answer: B

Rationale: A key objective of community health nursing is to improve the quality of life for individuals and families by promoting health and preventing disease. Community health nurses focus on preventive care, health promotion, and education to enhance the overall well-being of the community they serve.

Correct Answer: B

Rationale: Low literacy levels among patients present a common challenge in promoting health literacy. When individuals have low literacy levels, it becomes difficult for them to understand health information, leading to barriers in effectively promoting health literacy.

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: D

Rationale: Nurses play a crucial role in community health by advocating for policy changes to enhance health outcomes and working on addressing community health issues. While research and direct care are essential aspects of healthcare, nurses in community health often focus on advocating for policies that positively impact the health of the community as a whole.

Correct Answer: A

Rationale: Tertiary prevention aims to manage long-term health problems and prevent complications in individuals who already have a disease or condition. Providing rehabilitation services falls under tertiary prevention as it helps individuals recover and improve their quality of life after the initial treatment of a health issue.