Answer:
The second sentence.
Explanation:
Indicative means that something serves as a sign or evidence as to something else. In this instance, "the door was closed" and "the lights were out" are both indicators that Mr. Kane is not in his office.
The first sentence is not an example of the word indicative because there is no indicators to tell us that Mr. Kane is not in his office. We don't need evidence that he is not there because we already know that he had a dentist appointment.