2, 1, 4, 3
Mostly, because if it becomes a long conversation, you WILL eventually forget someones name. Not very professional to do that, so having note of name first will help greatly.
1 came second because, well, printers come unplugged, storms turn them off sometimes, many things happen, but a printer being off is COMMON.
4 is third because some printers, especially larger laser printers, it can be very difficult to check paper levels, and not all have warning lights.
Three last, mostly because if they print, well, the printer selected would be assigned, would it not? The more appropriate question would be, if it passes the top three, is if the printer is marked as ONLINE in printer properties on the PC, as it can sometimes switch to OFF due to some buggy drivers/software.
Next would be, did they even print to the proper printer if it's a network printer? They could have accidentally sent the job to a printer 10 floors away in a corporate environment and would never know, thinking the local printer is messed up.