Final answer:
The long-term problems linked to dropping out of school include increased likelihood of criminal behavior, difficulties in finding stable employment, and higher risks of health issues.
Step-by-step explanation:
The long-term problems linked to dropping out of school are correctly suggested by all of the above.
Option a states that about 70 percent of the US prison population is made up of people who have dropped out of school, indicating a link between dropping out and potential criminal behavior. Option b acknowledges that high school dropouts often face difficulties in finding stable employment, which can lead to financial instability. Option c suggests that those who drop out of school are more likely to experience health issues, possibly due to limited access to healthcare and a lack of education about healthy behaviors.