Final answer:
The precise number of males and females aged 10-14 in developed countries in 1990 can't be determined from the provided data, but it would likely be in the lower range of the provided options due to demographic transitions in developed countries.
Step-by-step explanation:
The question asks about the total number of males and females aged 10-14 in developed countries in 1990. To answer this, we need to consider historical population data, but the given references do not provide a specific answer for this demographic group in that exact year. Nevertheless, we can infer from the provided data trends in population growth and age structure in specific countries, like the U.S., China, and Japan.
Given that the question seems to presume a general understanding of demographic data and the references don't specify the figures for the 10-14 age group in 1990, it's difficult to provide an accurate answer without additional data. However, based on the population growth patterns provided and the fact that developed countries had already undergone demographic transition by 1990, leading to lower birth rates and a reduced proportion of children in the population, we can guess that the figures for developed countries would likely fall in the lower range of the provided options.