In traditional Chinese medicine, the yielding, negative and feminine force is termed:

Correct Answer: A

Rationale: The correct answer is A: Yin. In traditional Chinese medicine, Yin represents the yielding, negative, and feminine force. Yin is associated with qualities such as darkness, cold, passivity, and receptivity. It is essential for maintaining balance with Yang, the opposing force. Yang represents the active, positive, and masculine energy. Qi refers to the vital life force energy, not specifically related to Yin. Chai is not a term used in traditional Chinese medicine. Therefore, the correct choice is A: Yin.

Correct Answer: A

Rationale: The correct answer is A: Sex ratio. The sex ratio is the number of males per 100 females in a population and is used to describe the sex composition accurately. It provides a standardized measure of the balance between males and females. Sex proportion (choice B) is not a specific demographic tool and is not commonly used for this purpose. Population pyramid (choice C) is a graphical tool that shows the age and sex distribution of a population but does not provide a precise numerical measure of the sex composition. Choice D is incorrect because not all options listed are suitable for describing the sex composition of a population.

Correct Answer: B

Rationale: To calculate the crude death rate, divide the total number of deaths by the total population and multiply by 1000. In this case, there were 94 deaths in a population of 18,000. So, (94/18,000) * 1000 = 5.2/1000. This is the correct answer (B). Choice A is incorrect because it does not account for the total number of deaths in the population. Choices C and D are also incorrect as they do not accurately reflect the calculation based on the given information.

Correct Answer: C

Rationale: The correct answer is C, Swaroop's index. Swaroop's index considers the proportion of deaths in the productive age group (15-64 years) which reflects the impact of mortality on the workforce and economic productivity of a community. This statistic provides a comprehensive view of the health status of a community by focusing on the age group that contributes significantly to the economy and societal well-being. A: 1-4 year old age-specific mortality rate focuses only on a specific age group and may not provide a holistic view of the community's health status. B: Infant mortality rate only considers deaths in the first year of life and may not capture the overall health of the community. D: Crude death rate does not account for age distribution and may not accurately reflect the health status of a community.

Correct Answer: D

Rationale: The correct answer is D: Swaroop's index. This index is a comprehensive measure of nutritional status as it considers life expectancy, mortality rates, and age distribution. It provides a holistic view of the overall health and well-being of a population, including the impact of nutrition. A: 1-4 year old age-specific mortality rate only reflects mortality within a specific age group, not the overall nutritional status of the population. B: Proportionate mortality rate focuses on the proportion of deaths due to a specific cause, which may not directly reflect the nutritional status of the population. C: Infant mortality rate primarily measures the number of deaths of infants under one year old, which is an important indicator but does not capture the nutritional status of the entire population. In summary, Swaroop's index is the best statistic as it provides a broader perspective on the nutritional status of a population compared to the other choices.