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: A

Rationale: The correct interval between doses of tetanus toxoid for pregnant women is 4 weeks. This interval ensures that pregnant women receive adequate protection against tetanus, particularly in areas where the disease is prevalent. The 4-week interval helps in building and maintaining immunity to protect both the pregnant woman and her developing baby from tetanus infection.

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: A

Rationale: The correct answer is A - RA 8483. R.A. 8483, also known as AN ACT CREATING THE PHILIPPINE INSTITUTE OF TRADITIONAL AND ALTERNATIVE HEALTH CARE (PITAHC), was signed into law on December 9, 1997. This law aims to accelerate the development of traditional and alternative health care in the Philippines by providing for a Traditional and Alternative Health Care Development Fund and addressing other related purposes.

Correct Answer: D

Rationale: To describe the sex composition of the population, both the sex ratio and sex proportion can be utilized. The sex ratio provides a numerical comparison of the number of males to females in a population, while the sex proportion expresses the relative number or percentage of males and females in a given population. On the other hand, a population pyramid is a graphical representation that shows the age and sex distribution of a population. Therefore, any of these tools may be used to analyze and present the sex composition of a population.