Correct Answer: D

Rationale: Putting the baby to breast can help reduce post-delivery blood loss as suckling stimulates the release of oxytocin, causing uterine contractions. Lactation typically starts 1 to 3 days after delivery, not immediately. Nipple stretching exercises are recommended for flat or inverted nipples, not everted ones. Excessive washing of the nipples can dry them out, increasing the risk of fissures.

Correct Answer: C

Rationale: The vastus lateralis muscle is the preferred site for intramuscular injections in infants due to its larger muscle mass and fewer major nerves and blood vessels, reducing the risk of injury or adverse effects.

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: 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.

Correct Answer: D

Rationale: According to R.A. 3753, any birth attendant, including public health nurses, rural health midwives, and municipal health officers, may sign the certificate of live birth. This law allows a range of health professionals involved in childbirth to be authorized to sign birth certificates, ensuring accessibility and convenience for parents.