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 :)
Mostly are formed(or carved by water or erosion) side of sea cliffs, Yosemite national park, some of California's lakes,
false, Birthrates are usually higher in less developed countries thats why they are more likely to be over populated
Earthquakes would be the correct answer
I do believe it is kuala Lumpur