How many youths are there approximately in the United States?

The correct answer reflects the most accurate estimate regarding the youth population in the United States. Approximately 75 million youths encompass individuals aged 0 to 24, which is a common demographic range used when discussing youth statistics. This figure aligns with data from sources such as the U.S. Census Bureau, which tracks population trends and demographic shifts.

Given that the youth population is expected to rise, this answer recognizes not just the current statistics but also potential future trends in demographic growth, influenced by factors such as birth rates and immigration patterns.

Other figures presented in the options either underestimate the size of the youth population or do not accurately account for the anticipated growth in this demographic group. The choice indicating less than 50 million significantly underestimates the number of youths, while figures close to or above 100 million also exaggerate the current youth population. Thus, option B is indeed the most reasonable and well-supported choice.