a thick subsurface layer of soil that remains frozen throughout the year, occurring chiefly in polar regions.
Answer:
B) developing country
Explanation:
A developing country is a country with a growing economy and infrastructure. A growing economy is often depicted by rising per capita GDP of the populace. Examples are South Africa, Nigeria, e.t.c
A developed country is one with an advanced infastructural and technological innovations. They are usually characterized by a high standard of living and available social infrastructures.
