What can be determined about population sizes in these age pyramid diagrams? There are fewer individuals aged 40-44 in the developing country than there are in the industrialized country. There are more individuals aged 5-9 in the developing country than there are in the industrialized country. There developing country's population has a larger proportion of older individuals. The population size of the industrialized country is greater than that of the developing country. The industrialized country's population is increasing in size