Answer:
It's better because you get to actually see your friends and be able to fun instead of learning on the computer and seeing your friends through the screen.
The correct way would be: While she was sleeping, the alarm kept ringing in Jamie's ear.
<u><em>While</em></u> contains the element of duration and it is better to use a progressive form.
<u><em>Sleeping</em></u><em> </em>is a verb that has duration, so it should not be conjugated in the past simple if there is a simultaneous action.
Science should be based on
1. fact
3. empirical evidence