Check for possible software updates, my reasoning for that is the computer could be trying to initiate an update but is stopped by the user if you don't want it to update go to settings and turn off auto update
Answer: I think it's D.
Explanation: I'm sorry if I chose the wrong answer, I'm not too good with stuff like this.
<span>The answer is CTRL + A, this selects whole worksheet (A means all). In computing, a Control key is a transformer key which, when pushed in combination with one more key, achieves a singular operation (for example, Ctrl + A; like the Shift key, the Control key infrequently achieves any purpose when pushed by itself.</span>