Correct Answer: C

Rationale: Advocating for health policy changes is a significant action that can impact the health of a community on a larger scale by influencing policies that affect the well-being of the population. While providing health education and conducting community assessments are valuable activities, advocating for policy changes can lead to systemic improvements in healthcare access, quality, and outcomes.

Correct Answer: B

Rationale: Administering vaccines is a primary prevention strategy because it aims to prevent diseases before they occur by providing immunity against specific pathogens. Educating children on handwashing is important for preventing infections but falls under health promotion rather than primary prevention. Screening for early signs of disease and providing treatment for acute illnesses are considered secondary and tertiary prevention strategies, respectively, as they aim to detect and treat diseases that have already developed to prevent further complications.

Correct Answer: A

Rationale: Community health nursing focuses on promoting health and preventing disease within the community. This approach emphasizes preventive care, health education, and community-based interventions to improve the overall health and well-being of individuals and populations. While providing care to sick individuals is part of nursing, the primary goal of community health nursing is broader and encompasses proactive strategies to enhance community health.

Correct Answer: B

Rationale: Tracheostomy is the process of surgically creating an airway in the front of the neck to aid in breathing or remove secretions from the airway. Bronchoscopy involves visualizing the airways using a scope, not creating an airway. Thoracentesis is the procedure to remove fluid or air from the pleural space around the lungs, not related to creating an airway. Underwater seal drainage is a method used in chest drainage systems to remove air or fluid from the pleural space, not the creation of an airway.

Correct Answer: B

Rationale: William Morton was a dentist who was involved in the discovery of anesthesia. In 1846, Morton demonstrated the use of ether as a surgical anesthetic, leading to a significant advancement in medical practices. Robert Koch was a bacteriologist known for his work on anthrax and tuberculosis. Joseph Lister was a surgeon who introduced antiseptic surgical methods. Sushruta was an ancient Indian physician known for his contributions to the field of surgery.