Final answer:
The rise in the percentage of tax filers between the under 18 and 18-24 age groups is likely due to increased financial responsibility and changes in employment status and income levels as individuals transition into adulthood.
Step-by-step explanation:
The question asks about the reasons for a significant jump in the percentage of filers between the under 18 age group and the 18 through 24 age group when it comes to taxes. The most plausible explanations for this increase include: B. Increased financial responsibility in the 18 through 24 age group, as well as C. Changes in employment status and income levels between the age groups. Option B is reflective of the fact that individuals in the 18-24 age bracket are more likely to have full-time jobs and therefore more financial responsibilities compared to those under 18. Option C suggests that as individuals move from the under 18 bracket into the 18-24 bracket, they typically see changes in their employment status, such as moving from part-time or casual work, which they might have been doing while studying, to more stable full-time employment. This leads to increased income levels, which then results in a greater likelihood of having to file taxes.