Final answer:
Literacy, low crime rate, and universal healthcare system are crucial factors that profoundly impact a country's socio-economic status, with literacy being especially important for economic development. All the options are correct.
Step-by-step explanation:
Factors such as driving age, literacy, low crime rate, and a universal healthcare system can all significantly influence a country's socio-economic status. Among these, literacy is often seen as a fundamental element that directly affects economic development, as it enables a workforce to acquire skills and improve productivity.
A low crime rate contributes to a stable society, which can attract investment and promote economic growth. A universal healthcare system supports the population's health, reducing the burden of disease and allowing people to contribute more effectively to the economy.
While the driving age has some influence on automobile-related businesses and public safety, it is less impactful on the broader socio-economic status compared to the other factors mentioned.