Correct Answer: C

Rationale: The correct answer is C: Magnitude of the health problem. This criterion specifically looks at the percentage of the population affected by a health issue and is primarily used in community health care settings. On the other hand, modifiability of the problem, nature of the problem presented, and preventive potential of the health problem are criteria that are considered in both family and community health care settings.

Correct Answer: A

Rationale: Presidential Decree (P.D.) 651 amended Republic Act (R.A.) 3753, specifically requiring the registration of births within 30 days from their occurrence. This amendment emphasizes the timely and accurate recording of vital statistics, which is crucial for legal and administrative purposes.

Correct Answer: B

Rationale: Retinol 200,000 IU, which is a form of megadose Vitamin A, is contraindicated in pregnancy as it may have teratogenic effects, potentially harming the developing fetus. It is important to avoid high doses of Vitamin A during pregnancy to prevent adverse outcomes.

Correct Answer: D

Rationale: Individuals who have had a delivery within the past 15 months should be considered special targets for family planning because the ideal birth spacing is at least two years. By waiting two years (15 months post-delivery + 9 months of pregnancy), the individual can give their body enough time to recover and reduce potential health risks associated with closely spaced pregnancies.

Correct Answer: B

Rationale: The correct answer is B: Liver cancer. The Hepatitis B vaccine helps prevent liver cancer by preventing chronic Hepatitis B infection. While Hepatitis B infection can lead to jaundice, the primary goal of the vaccine is to prevent liver complications such as cirrhosis and liver cancer.