While troubleshooting a hardware issue on a laptop with a removable battery you have come to the conclusion that there is a physical issue with one of the laptop's components. The laptop is not plugged into an external power source, what is the next step before opening the laptop's case

The awnser is d. i just looked it up 

This statement is correct

Well, this code would box the whole body of an html document. by using the relative value for position, you are telling it to position relative to its normal position, which the top left corner is at (0,0). by using left: 50px, you are telling the box to set the left margin  edge to 50px and by using top: 50px, you are telling it to set the top margin edge to 50px. by doing this shifting, the top left corner of the box, which is at (0,0) would be positioned at (50,50)