Why do people say that the sun set when it doesn’t

The sun stays in its position at the center of our solar system. it doesn't rise and set. But is appears to rise and set because  of the earths rotation on its axis. As the earth rotates toward the east it looks like the sun is moving west

you can get banned on this website if you post your quizzes here. . . .

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.