Based on the details given on the GDP PPP, the transportation, and the life expectancy, we can infer that countries A and B are Developed countries but C is a developing country.
Country B is the most developed country out of the three as it has the highest GDP PPP, the highest means of transportation, the highest life expectancy, and the longest years in school.
Country A is also a developed country based on its life expectancy, its GDP PPP, and its years in school. It is not as developed as Country B however.
Country C is a developing country. It is quite a small country so we cannot use transportation to decide its level. Based on its life expectancy and number of years in school however, we know it is a developing country.
Find out more on developing countries at https://brainly.com/question/1518893.