Correct Answer: D

Rationale: The correct answer is D because all the listed sources - interview results with family members, family folder, and actual observation of the family situation - provide comprehensive information about the family. Choice A alone (interview results) might not capture the complete picture of the family, as it may be biased or limited. Choice B (family folder) could contain valuable information but might not be up to date or comprehensive. Choice C (actual observation) is essential to understand the family dynamics, but it alone may not provide all the necessary information. Therefore, the combination of all these sources (D) is needed for a thorough understanding of the family.

Correct Answer: C

Rationale: Designing and implementing a no smoking campaign aligns with the objective of reducing tobacco use, which is one of the leading health indicators of Healthy People 2020. This intervention directly targets a significant public health concern. Leading a water aerobics class, teaching cultural awareness, or providing glucometers, while beneficial in other contexts, do not specifically address the leading health indicators outlined by Healthy People 2020.

Correct Answer: D

Rationale: To excel in a health education program, a Public Health Nurse (PHN) must possess a combination of teaching-learning strategies to effectively impart knowledge, provide accurate information to ensure credibility, and communicate ideas effectively to engage and interact with the audience. Therefore, all of these skills are essential for a PHN to succeed in her health education program. Choices A, B, and C are integral components of a successful health education program, making option D the correct answer.

Correct Answer: C

Rationale: The correct answer is C: 'Dyspnea and cough.' Pulmonary embolism often presents with a sudden onset of dyspnea (difficulty breathing) and cough, which are due to the obstruction of blood flow in the pulmonary arteries. Choices A, B, and D are incorrect. Positive Homan's sign is associated with deep vein thrombosis, fever and chills are nonspecific symptoms commonly seen in infective endocarditis, and sensory impairment is not typically indicative of pulmonary embolism.

Correct Answer: B

Rationale: Prevalence is the correct answer as it refers to the number of existing cases of a disease in a specific population at a given time. Incidence, on the other hand, refers to the number of new cases of a disease in a defined population over a specific period. Mortality rate is the measure of the number of deaths in a particular population due to a specific cause, while morbidity rate is the frequency of a disease in a specific population.