Context: made snap judgments about fellow conference - goers which may or may not have been appropriate or well - founded . wished we 'd been able to get into the control tower.went back to room and read . travel partner went to meet with advisor to work on presentation . fell asleep just before opening session ; was woken by travel partner 30 min later .

Question: How long might have the travel partner met with his advisor ?
Options:
0. None of the above choices .
1. He might have met with his advisor less than 30 minutes .
2. He might have met with his advisor less than 20 minutes .
3. He might have met with his advisor less than 15 minutes .
Answer: 1