The United States is the leader among industrialized nations in which of the following health categories?

Choose one answer.

a. Proportion of Gross Domestic Product (GDP) spent on health services

b. Life Expectancy at Birth

c. Lowest Infant Mortality

d. All of the above

To identify the correct answer among the given options, we will need to compare the United States with other industrialized nations in each health category.

a. Proportion of Gross Domestic Product (GDP) spent on health services: To determine if the United States is the leader in this category, we would need to find data on the proportion of GDP spent on health services in different countries. The World Health Organization (WHO) or the Organization for Economic Co-operation and Development (OECD) are good sources to find such information. By comparing the data, we can see if the United States ranks first.

b. Life Expectancy at Birth: We can compare the life expectancy at birth between different countries to determine if the United States is the leader. WHO or the Central Intelligence Agency's (CIA) World Factbook are good sources for life expectancy data. We can compare the life expectancy numbers of the United States with those of other industrialized nations to see if it ranks the highest.

c. Lowest Infant Mortality: Again, we would need to compare the infant mortality rates of the United States with those of other industrialized nations. Data on infant mortality rates can be found on WHO's website or from other reputable health organizations. By comparing the rates, we can determine if the United States has the lowest infant mortality rate among industrialized nations.

d. All of the above: If the United States is the leader in all three categories - proportion of GDP spent on health services, life expectancy at birth, and the lowest infant mortality rate - then the answer would be "d. All of the above."

To find the specific answer, you can refer to the relevant sources mentioned above and compare the United States' data with that of other industrialized nations.

d. All of the above