Do you mean just the surface or the 4 layers of the entire planet?
The four layers of the planet are, as mentioned, the crust, mantle, outer core, and inner core.
As for the surface, there aren't really 4 distinct parts unless you want to break in up into continents, oceans, ice caps, and atmosphere, but I'm just postulating here.
It's closeness im pretty sure
I believe the best answer is C. i mean it has already made that progress, hints the term developed, not developing. i hope this helped, have an amazing day :)
Answer:
1. low
Explanation:
because those people there is prefer to be singla than married.