Correct Answer: C

Rationale: Measuring changes in health outcomes is a crucial method to evaluate community health programs. By assessing the impact on health outcomes, such as reduced disease rates or improved wellness indicators, the effectiveness of the program can be determined. This approach provides concrete evidence of the program's success in promoting community health.

Correct Answer: D

Rationale: Community health nurses play a vital role in assessing environmental health risks by monitoring air and water quality. This action helps identify potential hazards that may impact the health of individuals in the community. By monitoring these environmental factors, nurses can gather important data to address and mitigate health risks associated with poor air or water quality.

Correct Answer: A

Rationale: The most effective factor to enhance health education is using culturally relevant materials. This approach makes the information more accessible and relatable to the target audience, leading to better understanding and engagement.

Correct Answer: A

Rationale: Limited resources are a common challenge in community health nursing as they can impact the ability to deliver comprehensive care. This challenge can include financial constraints, lack of supplies, and inadequate staffing levels, all of which can hinder the provision of effective healthcare services to the community.

Correct Answer: B

Rationale: The high cost of services can be a significant barrier that prevents individuals from accessing necessary health care. Financial constraints can deter people from seeking medical help, leading to negative health outcomes.