None of the above choices .He might have met with his advisor less than 30 minutes .He might have met with his advisor less than 20 minutes .He might have met with his advisor less than 15 minutes .
How long might have the travel partner met with his advisor ?
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 .