The first set of these questions deals with an "actual absence" - the owner actually leaves the house and the dog is either alone or totally without the owner. The second set deals with "virtual absence" - the owner is home, but not accessible because the door is closed or the dog is barricaded in another room. The questions are the same for each, but please answer both.
Check YES if the dog does react in the listed circumstance.
Check NO if the dog does not react in the listed circumstance.
Check UNKNOWN if you don't know.