The Thermosphere Is: 1

The thermosphere is: 1. the layer of atmosphere closest to the Earth's surface where weather occurs.
2. supports long distance communication because it reflects outgoing radio waves back to Earth without the use of satellites.
3. the layer where auroras form when electrically charged particles from the sun collide with gas molecules releasing energy visible as light of different colors

A) 1 only
B) 2 only
C) 3 only
D) 2 and 3