What is a developed nation? A. a nation working hard to increase its gross national income
B. a nation working hard to support its citizens and develop business
C. a nation that has made major social, political, and economic progress.

a nation that has made major social,political,and economic progress.

C. a nation that has made major social, political, and economic progress.

answer; /// during daylight hours the sun heats up the ground,and at night the clouds insulate the warmth making it warmer ;