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: 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: A

Rationale: In traditional Chinese medicine, the force characterized by yielding, negative, and feminine aspects is referred to as Yin. Yin is associated with qualities such as darkness, passivity, cold, and intuition. On the other hand, Yang represents the male, dominating, positive, and masculine force associated with light, activity, heat, and logic. Qi is the vital energy that flows through the body, and Chai is not a term used in traditional Chinese medicine for these forces.

Correct Answer: A

Rationale: The most appropriate statistic to reflect the nutritional status of a population is the 1-4 year old age-specific mortality rate. This age group is highly susceptible to the effects of malnutrition, so a population with poor nutritional status is likely to have a high 1-4 year old age-specific mortality rate, also known as child mortality rate.

Correct Answer: D

Rationale: The Sentrong Sigla Movement is a collaborative effort between the Department of Health (DOH) and local government units. Its primary strategy is the certification of health centers that meet the standards established by the DOH. This certification process ensures that health centers provide quality services and comply with the set guidelines, ultimately improving the overall health service delivery in the region.