Correct Answer: B

Rationale: The correct answer is OPV. Oral Polio Vaccine should be stored in the freezer to maintain its potency. Vaccines like DPT, Hepatitis B vaccine, and Measles vaccine are typically stored in the refrigerator to ensure their efficacy.

Correct Answer: A

Rationale: The BCG vaccine is recommended to be given at birth to protect against tuberculosis. It is often administered soon after birth to provide early protection against the disease, especially in areas where tuberculosis is prevalent.

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: A

Rationale: Vitamin A is crucial for maintaining the integrity of epithelial tissues, which are the body's first line of defense against pathogens. By supporting the immune system, vitamin A helps protect the postpartum client from infections and promotes overall health.

Correct Answer: A

Rationale: Iron supplementation is essential for pregnant women to prevent anemia, which can have adverse effects on both the mother and the developing fetus. Anemia in pregnancy can lead to fatigue, weakness, and even complications such as preterm birth or low birth weight. Therefore, ensuring an adequate supply of iron through supplementation is crucial to support the increased demands during pregnancy and prevent deficiencies that could negatively impact the health of both the mother and the baby.