Correct Answer: D

Rationale: Intersectoral linkages involve collaborations between the health sector and other sectors for community development. In this scenario, cooperation between a public health nurse (PHN) and a public school teacher exemplifies intersectoral linkages, as it represents a partnership between the health and education sectors.

Correct Answer: A

Rationale: The correct answer is A: Crude birth rate. Natality refers to birth, making the crude birth rate a measure of the number of live births in a given population over a specific period of time. It is an essential indicator in demography and public health to understand population dynamics.

Correct Answer: C

Rationale: The principle of freedom of choice in family planning programs emphasizes providing couples with adequate information about the different methods available. This enables them to make informed decisions based on their preferences and needs. By ensuring couples have access to comprehensive information, they can freely choose the family planning method that best suits their circumstances, promoting autonomy and informed decision-making.

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.

Correct Answer: A

Rationale: The primary reason for giving iron supplementation to pregnant women is to prevent anemia. Anemia can have detrimental effects on both the mother and the developing fetus. Iron is essential for the production of red blood cells, and during pregnancy, the demand for iron increases to support the mother's increased blood volume and the developing fetus. Anemia in pregnancy can lead to complications such as preterm birth, low birth weight, and even maternal mortality. Therefore, ensuring adequate iron intake through supplementation is crucial to prevent these adverse outcomes.