In the Outer Most Layer of the Atmosphere,gas Molecules Can

Multiple Choice

In the outer most layer of the atmosphere,gas molecules can have a temperature of 1000°C because ________.

A) that is the temperature of an object that is entering the earth's atmosphere at a high speed
B) that is the temperature of the solar radiation
C) that is the speed of the individual molecules
D) there is no filter to keep the sun from heating the outer atmosphere
E) none of the above