Which of these would be describing a developed country

A developing country is usually a country with a more stabilized and established economy and has achieved a more industrial era. Developed countries have a higer life expectancy than less developed countries and they also have a higer GDP and GNP than less developed countries.

credit card number 4 is the right answer

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.